31104040312 has 32 divisors (see below), whose sum is σ = 59661478800. Its totient is φ = 15198223104.

The previous prime is 31104040249. The next prime is 31104040321. The reversal of 31104040312 is 21304040113.

It is a super-2 number, since 2×31104040312² (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 31104040312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180658 + ... + 307969.

Almost surely, 2^31104040312 is an apocalyptic number.

It is an amenable number.

31104040312 is a deficient number, since it is larger than the sum of its proper divisors (28557438488).

31104040312 is a wasteful number, since it uses less digits than its factorization.

31104040312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488815 (or 488811 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31104040312 its reverse (21304040113), we get a palindrome (52408080425).

The spelling of 31104040312 in words is "thirty-one billion, one hundred four million, forty thousand, three hundred twelve".