31353120134240 has 96 divisors (see below), whose sum is σ = 74255607879264. Its totient is φ = 12510124462080.

The previous prime is 31353120134209. The next prime is 31353120134251. The reversal of 31353120134240 is 4243102135313.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 31353120134197 and 31353120134206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845147372 + ... + 845184468.

It is an arithmetic number, because the mean of its divisors is an integer number (773495915409).

Almost surely, 2^{31353120134240} is an apocalyptic number.

It is an amenable number.

31353120134240 is an abundant number, since it is smaller than the sum of its proper divisors (42902487745024).

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

31353120134240 is a wasteful number, since it uses less digits than its factorization.

31353120134240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50080 (or 50072 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 31353120134240 its reverse (4243102135313), we get a palindrome (35596222269553).

The spelling of 31353120134240 in words is "thirty-one trillion, three hundred fifty-three billion, one hundred twenty million, one hundred thirty-four thousand, two hundred forty".