31303032231320 has 128 divisors (see below), whose sum is σ = 71584668527040. Its totient is φ = 12318369423360.

The previous prime is 31303032231313. The next prime is 31303032231323. The reversal of 31303032231320 is 2313223030313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31303032231320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31303032231323) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 296683775 + ... + 296789265.

Almost surely, 2^{31303032231320} is an apocalyptic number.

It is an amenable number.

31303032231320 is an abundant number, since it is smaller than the sum of its proper divisors (40281636295720).

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

31303032231320 is a wasteful number, since it uses less digits than its factorization.

31303032231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106125 (or 106121 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 31303032231320 its reverse (2313223030313), we get a palindrome (33616255261633).

The spelling of 31303032231320 in words is "thirty-one trillion, three hundred three billion, thirty-two million, two hundred thirty-one thousand, three hundred twenty".