31203024144020 has 12 divisors (see below), whose sum is σ = 65526350702484. Its totient is φ = 12481209657600.

The previous prime is 31203024144001. The next prime is 31203024144161. The reversal of 31203024144020 is 2044142030213.

It can be written as a sum of positive squares in 2 ways, for example, as 20142969800464 + 11060054343556 = 4488092^2 + 3325666^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780075603581 + ... + 780075603620.

It is an arithmetic number, because the mean of its divisors is an integer number (5460529225207).

Almost surely, 2^{31203024144020} is an apocalyptic number.

It is an amenable number.

31203024144020 is an abundant number, since it is smaller than the sum of its proper divisors (34323326558464).

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

31203024144020 is a wasteful number, since it uses less digits than its factorization.

31203024144020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560151207210 (or 1560151207208 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31203024144020 its reverse (2044142030213), we get a palindrome (33247166174233).

The spelling of 31203024144020 in words is "thirty-one trillion, two hundred three billion, twenty-four million, one hundred forty-four thousand, twenty".