31113000231 has 8 divisors (see below), whose sum is σ = 41488278144. Its totient is φ = 20739861240.

The previous prime is 31113000227. The next prime is 31113000257. The reversal of 31113000231 is 13200031113.

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

It is not a de Polignac number, because 31113000231 - 2² = 31113000227 is a prime.

It is a super-2 number, since 2×31113000231² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31113000231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113002231) 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, 500475 + ... + 559196.

It is an arithmetic number, because the mean of its divisors is an integer number (5186034768).

Almost surely, 2^31113000231 is an apocalyptic number.

31113000231 is a deficient number, since it is larger than the sum of its proper divisors (10375277913).

31113000231 is a wasteful number, since it uses less digits than its factorization.

31113000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069461.

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

Adding to 31113000231 its reverse (13200031113), we get a palindrome (44313031344).

The spelling of 31113000231 in words is "thirty-one billion, one hundred thirteen million, two hundred thirty-one", and thus it is an aban number.