Search a number
-
+
31313410023 = 373740300399
BaseRepresentation
bin11101001010011011…
…001011011111100111
32222211021201001012210
4131022123023133213
51003112213110043
622215111014503
72155655410410
oct351233133747
988737631183
1031313410023
1112309670465
12609a96a433
132c50516aac
141730a5a807
15c340b7633
hex74a6cb7e7

31313410023 has 16 divisors (see below), whose sum is σ = 49005286400. Its totient is φ = 17409771936.

The previous prime is 31313410013. The next prime is 31313410027. The reversal of 31313410023 is 32001431313.

It is not a de Polignac number, because 31313410023 - 210 = 31313408999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313410027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20149423 + ... + 20150976.

It is an arithmetic number, because the mean of its divisors is an integer number (3062830400).

Almost surely, 231313410023 is an apocalyptic number.

31313410023 is a deficient number, since it is larger than the sum of its proper divisors (17691876377).

31313410023 is a wasteful number, since it uses less digits than its factorization.

31313410023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40300446.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31313410023 its reverse (32001431313), we get a palindrome (63314841336).

The spelling of 31313410023 in words is "thirty-one billion, three hundred thirteen million, four hundred ten thousand, twenty-three".

Divisors: 1 3 7 21 37 111 259 777 40300399 120901197 282102793 846308379 1491114763 4473344289 10437803341 31313410023