31113110012 has 6 divisors (see below), whose sum is σ = 54447942528. Its totient is φ = 15556555004.

The previous prime is 31113109991. The next prime is 31113110053. The reversal of 31113110012 is 21001131113.

It is a happy number.

It is a super-2 number, since 2×31113110012² (a number of 22 digits) contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3889138748 + ... + 3889138755.

It is an arithmetic number, because the mean of its divisors is an integer number (9074657088).

Almost surely, 2^31113110012 is an apocalyptic number.

It is an amenable number.

31113110012 is a deficient number, since it is larger than the sum of its proper divisors (23334832516).

31113110012 is a wasteful number, since it uses less digits than its factorization.

31113110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7778277507 (or 7778277505 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31113110012 its reverse (21001131113), we get a palindrome (52114241125).

The spelling of 31113110012 in words is "thirty-one billion, one hundred thirteen million, one hundred ten thousand, twelve".