31302000211312 has 40 divisors (see below), whose sum is σ = 61939445907456. Its totient is φ = 15317642617536.

The previous prime is 31302000211277. The next prime is 31302000211337. The reversal of 31302000211312 is 21311200020313.

It is a super-2 number, since 2×31302000211312² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31302000211312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33321853 + ... + 34248355.

Almost surely, 2^{31302000211312} is an apocalyptic number.

It is an amenable number.

31302000211312 is a deficient number, since it is larger than the sum of its proper divisors (30637445696144).

31302000211312 is a wasteful number, since it uses less digits than its factorization.

31302000211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971485 (or 971479 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31302000211312 its reverse (21311200020313), we get a palindrome (52613200231625).

The spelling of 31302000211312 in words is "thirty-one trillion, three hundred two billion, two hundred eleven thousand, three hundred twelve".