31031020530412 has 24 divisors (see below), whose sum is σ = 63233022970656. Its totient is φ = 13048084103808.

The previous prime is 31031020530379. The next prime is 31031020530413. The reversal of 31031020530412 is 21403502013013.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31031020530413) 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, 10455194113 + ... + 10455197080.

It is an arithmetic number, because the mean of its divisors is an integer number (2634709290444).

Almost surely, 2^{31031020530412} is an apocalyptic number.

It is an amenable number.

31031020530412 is an abundant number, since it is smaller than the sum of its proper divisors (32202002440244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31031020530412 is a wasteful number, since it uses less digits than its factorization.

31031020530412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20910391257 (or 20910391255 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31031020530412 its reverse (21403502013013), we get a palindrome (52434522543425).

The spelling of 31031020530412 in words is "thirty-one trillion, thirty-one billion, twenty million, five hundred thirty thousand, four hundred twelve".