31301230331020 has 48 divisors (see below), whose sum is σ = 72515495733408. Its totient is φ = 11275490096640.

The previous prime is 31301230330991. The next prime is 31301230331089. The reversal of 31301230331020 is 2013303210313.

It is a junction number, because it is equal to n+sod(n) for n = 31301230330982 and 31301230331000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468152114 + ... + 1468173433.

It is an arithmetic number, because the mean of its divisors is an integer number (1510739494446).

Almost surely, 2^{31301230331020} is an apocalyptic number.

It is an amenable number.

31301230331020 is an abundant number, since it is smaller than the sum of its proper divisors (41214265402388).

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

31301230331020 is a wasteful number, since it uses less digits than its factorization.

31301230331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936325610 (or 2936325608 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31301230331020 its reverse (2013303210313), we get a palindrome (33314533541333).

The spelling of 31301230331020 in words is "thirty-one trillion, three hundred one billion, two hundred thirty million, three hundred thirty-one thousand, twenty".