31111334012 has 24 divisors (see below), whose sum is σ = 59493571200. Its totient is φ = 14117894960.

The previous prime is 31111334011. The next prime is 31111334021. The reversal of 31111334012 is 21043311113.

It is a super-2 number, since 2×31111334012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31111334011) 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, 563858 + ... + 616569.

It is an arithmetic number, because the mean of its divisors is an integer number (2478898800).

Almost surely, 2^31111334012 is an apocalyptic number.

It is an amenable number.

31111334012 is a deficient number, since it is larger than the sum of its proper divisors (28382237188).

31111334012 is a wasteful number, since it uses less digits than its factorization.

31111334012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181041 (or 1181039 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31111334012 its reverse (21043311113), we get a palindrome (52154645125).

The spelling of 31111334012 in words is "thirty-one billion, one hundred eleven million, three hundred thirty-four thousand, twelve".