31311021414321 has 24 divisors (see below), whose sum is σ = 49343621961504. Its totient is φ = 18974437090560.

The previous prime is 31311021414317. The next prime is 31311021414359. The reversal of 31311021414321 is 12341412011313.

31311021414321 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 10 + 214 + 1 + 432 + 1 = 666.

It is not a de Polignac number, because 31311021414321 - 2² = 31311021414317 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31311021414311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15188896 + ... + 17126721.

It is an arithmetic number, because the mean of its divisors is an integer number (2055984248396).

Almost surely, 2^{31311021414321} is an apocalyptic number.

It is an amenable number.

31311021414321 is a deficient number, since it is larger than the sum of its proper divisors (18032600547183).

31311021414321 is a wasteful number, since it uses less digits than its factorization.

31311021414321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32325421 (or 32325418 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 31311021414321 its reverse (12341412011313), we get a palindrome (43652433425634).

The spelling of 31311021414321 in words is "thirty-one trillion, three hundred eleven billion, twenty-one million, four hundred fourteen thousand, three hundred twenty-one".