31345022242020 has 48 divisors (see below), whose sum is σ = 87767403494400. Its totient is φ = 8358544862976.

The previous prime is 31345022242007. The next prime is 31345022242067. The reversal of 31345022242020 is 2024222054313.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256 + ... + 7917704.

It is an arithmetic number, because the mean of its divisors is an integer number (1828487572800).

Almost surely, 2^{31345022242020} is an apocalyptic number.

31345022242020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31345022242020 is an abundant number, since it is smaller than the sum of its proper divisors (56422381252380).

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

31345022242020 is a wasteful number, since it uses less digits than its factorization.

31345022242020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7983444 (or 7983442 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 31345022242020 its reverse (2024222054313), we get a palindrome (33369244296333).

The spelling of 31345022242020 in words is "thirty-one trillion, three hundred forty-five billion, twenty-two million, two hundred forty-two thousand, twenty".