Search a number
-
+
313111230 = 23559176899
BaseRepresentation
bin10010101010011…
…011001010111110
3210211011200212020
4102222123022332
51120124024410
651023021010
710521254505
oct2252331276
9724150766
10313111230
1115081a113
1288a3a766
134cb3b823
142d82783c
151c74da70
hex12a9b2be

313111230 has 32 divisors (see below), whose sum is σ = 764208000. Its totient is φ = 82080672.

The previous prime is 313111217. The next prime is 313111243. The reversal of 313111230 is 32111313.

313111230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (313111217) and next prime (313111243).

It is a super-2 number, since 2×3131112302 = 196077284704225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86680 + ... + 90219.

It is an arithmetic number, because the mean of its divisors is an integer number (23881500).

Almost surely, 2313111230 is an apocalyptic number.

313111230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

313111230 is an abundant number, since it is smaller than the sum of its proper divisors (451096770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313111230 is a wasteful number, since it uses less digits than its factorization.

313111230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176968.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 313111230 is about 17694.9492793848. The cubic root of 313111230 is about 679.0465515978.

Adding to 313111230 its reverse (32111313), we get a palindrome (345222543).

The spelling of 313111230 in words is "three hundred thirteen million, one hundred eleven thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 59 118 177 295 354 590 885 1770 176899 353798 530697 884495 1061394 1768990 2653485 5306970 10437041 20874082 31311123 52185205 62622246 104370410 156555615 313111230