31302030312312 has 64 divisors (see below), whose sum is σ = 78477208390560. Its totient is φ = 10404433152000.

The previous prime is 31302030312283. The next prime is 31302030312317. The reversal of 31302030312312 is 21321303020313.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302030312317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11031612 + ... + 13575732.

Almost surely, 2^{31302030312312} is an apocalyptic number.

It is an amenable number.

31302030312312 is an abundant number, since it is smaller than the sum of its proper divisors (47175178078248).

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

31302030312312 is a wasteful number, since it uses less digits than its factorization.

31302030312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545584 (or 2545580 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31302030312312 its reverse (21321303020313), we get a palindrome (52623333332625).

The spelling of 31302030312312 in words is "thirty-one trillion, three hundred two billion, thirty million, three hundred twelve thousand, three hundred twelve".