Search a number
-
+
331100231 = 7114300003
BaseRepresentation
bin10011101111000…
…011000001000111
3212002000122010112
4103233003001013
51134230201411
652504343235
711130206540
oct2357030107
9762018115
10331100231
1115a996560
1292a74b1b
13537997c7
1431d8b4c7
151e103b8b
hex13bc3047

331100231 has 8 divisors (see below), whose sum is σ = 412800384. Its totient is φ = 258000120.

The previous prime is 331100227. The next prime is 331100257. The reversal of 331100231 is 132001133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331100231 - 22 = 331100227 is a prime.

It is a super-2 number, since 2×3311002312 = 219254725936506722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331100261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2149925 + ... + 2150078.

It is an arithmetic number, because the mean of its divisors is an integer number (51600048).

Almost surely, 2331100231 is an apocalyptic number.

331100231 is a deficient number, since it is larger than the sum of its proper divisors (81700153).

331100231 is a wasteful number, since it uses less digits than its factorization.

331100231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300021.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 331100231 is about 18196.1597871639. The cubic root of 331100231 is about 691.8094571280.

Adding to 331100231 its reverse (132001133), we get a palindrome (463101364).

The spelling of 331100231 in words is "three hundred thirty-one million, one hundred thousand, two hundred thirty-one".

Divisors: 1 7 11 77 4300003 30100021 47300033 331100231