31203320111442 has 32 divisors (see below), whose sum is σ = 69400955381760. Its totient is φ = 10392070100400.

The previous prime is 31203320111419. The next prime is 31203320111497. The reversal of 31203320111442 is 24411102330213.

31203320111442 is a `hidden beast` number, since 3 + 1 + 2 + 0 + 3 + 3 + 201 + 11 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250954033 + ... + 251078340.

It is an arithmetic number, because the mean of its divisors is an integer number (2168779855680).

Almost surely, 2^{31203320111442} is an apocalyptic number.

31203320111442 is an abundant number, since it is smaller than the sum of its proper divisors (38197635270318).

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

31203320111442 is a wasteful number, since it uses less digits than its factorization.

31203320111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502033535 (or 502033529 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 31203320111442 its reverse (24411102330213), we get a palindrome (55614422441655).

The spelling of 31203320111442 in words is "thirty-one trillion, two hundred three billion, three hundred twenty million, one hundred eleven thousand, four hundred forty-two".