31253045302540 has 24 divisors (see below), whose sum is σ = 65733784234272. Its totient is φ = 12481715435520.

The previous prime is 31253045302529. The next prime is 31253045302663. The reversal of 31253045302540 is 4520354035213.

It is a self number, because there is not a number n which added to its sum of digits gives 31253045302540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218904704 + ... + 1218930343.

It is an arithmetic number, because the mean of its divisors is an integer number (2738907676428).

Almost surely, 2^{31253045302540} is an apocalyptic number.

It is an amenable number.

31253045302540 is an abundant number, since it is smaller than the sum of its proper divisors (34480738931732).

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

31253045302540 is a wasteful number, since it uses less digits than its factorization.

31253045302540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437835697 (or 2437835695 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 31253045302540 its reverse (4520354035213), we get a palindrome (35773399337753).

The spelling of 31253045302540 in words is "thirty-one trillion, two hundred fifty-three billion, forty-five million, three hundred two thousand, five hundred forty".