31311330030320 has 80 divisors (see below), whose sum is σ = 77829487968960. Its totient is φ = 11673350172672.

The previous prime is 31311330030319. The next prime is 31311330030367. The reversal of 31311330030320 is 2303003311313.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111622235 + ... + 111902394.

It is an arithmetic number, because the mean of its divisors is an integer number (972868599612).

Almost surely, 2^{31311330030320} is an apocalyptic number.

It is an amenable number.

31311330030320 is an abundant number, since it is smaller than the sum of its proper divisors (46518157938640).

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

31311330030320 is a wasteful number, since it uses less digits than its factorization.

31311330030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223524762 (or 223524756 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 31311330030320 its reverse (2303003311313), we get a palindrome (33614333341633).

The spelling of 31311330030320 in words is "thirty-one trillion, three hundred eleven billion, three hundred thirty million, thirty thousand, three hundred twenty".