31113022021012 has 12 divisors (see below), whose sum is σ = 54449427627616. Its totient is φ = 15556042698840.

The previous prime is 31113022021007. The next prime is 31113022021013. The reversal of 31113022021012 is 21012022031113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113022021013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116928414 + ... + 117194197.

Almost surely, 2^{31113022021012} is an apocalyptic number.

It is an amenable number.

31113022021012 is a deficient number, since it is larger than the sum of its proper divisors (23336405606604).

31113022021012 is a wasteful number, since it uses less digits than its factorization.

31113022021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234155838 (or 234155836 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31113022021012 its reverse (21012022031113), we get a palindrome (52125044052125).

The spelling of 31113022021012 in words is "thirty-one trillion, one hundred thirteen billion, twenty-two million, twenty-one thousand, twelve".