31263553130640 has 40 divisors (see below), whose sum is σ = 96917014705728. Its totient is φ = 8336947501440.

The previous prime is 31263553130603. The next prime is 31263553130659. The reversal of 31263553130640 is 4603135536213.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 31263553130592 and 31263553130601.

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, 65132402116 + ... + 65132402595.

Almost surely, 2^{31263553130640} is an apocalyptic number.

31263553130640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31263553130640 is an abundant number, since it is smaller than the sum of its proper divisors (65653461575088).

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

31263553130640 is a wasteful number, since it uses less digits than its factorization.

31263553130640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130264804727 (or 130264804721 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

Adding to 31263553130640 its reverse (4603135536213), we get a palindrome (35866688666853).

The spelling of 31263553130640 in words is "thirty-one trillion, two hundred sixty-three billion, five hundred fifty-three million, one hundred thirty thousand, six hundred forty".