31000253012012 has 12 divisors (see below), whose sum is σ = 54252364766880. Its totient is φ = 15499577364336.

The previous prime is 31000253012011. The next prime is 31000253012051. The reversal of 31000253012012 is 21021035200013.

It is a super-2 number, since 2×31000253012012² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31000253012011) 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, 137158388 + ... + 137384219.

It is an arithmetic number, because the mean of its divisors is an integer number (4521030397240).

Almost surely, 2^{31000253012012} is an apocalyptic number.

It is an amenable number.

31000253012012 is a deficient number, since it is larger than the sum of its proper divisors (23252111754868).

31000253012012 is a wasteful number, since it uses less digits than its factorization.

31000253012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274570840 (or 274570838 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 31000253012012 its reverse (21021035200013), we get a palindrome (52021288212025).

The spelling of 31000253012012 in words is "thirty-one trillion, two hundred fifty-three million, twelve thousand, twelve".