31530035631340 has 24 divisors (see below), whose sum is σ = 66231837534240. Its totient is φ = 12608440403328.

The previous prime is 31530035631337. The next prime is 31530035631359. The reversal of 31530035631340 is 4313653003513.

It is a self number, because there is not a number n which added to its sum of digits gives 31530035631340.

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, 223293232 + ... + 223434391.

It is an arithmetic number, because the mean of its divisors is an integer number (2759659897260).

Almost surely, 2^{31530035631340} is an apocalyptic number.

It is an amenable number.

31530035631340 is an abundant number, since it is smaller than the sum of its proper divisors (34701801902900).

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

31530035631340 is a wasteful number, since it uses less digits than its factorization.

31530035631340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446731161 (or 446731159 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 37.

Adding to 31530035631340 its reverse (4313653003513), we get a palindrome (35843688634853).

The spelling of 31530035631340 in words is "thirty-one trillion, five hundred thirty billion, thirty-five million, six hundred thirty-one thousand, three hundred forty".