31130231303320 has 32 divisors (see below), whose sum is σ = 71088438654000. Its totient is φ = 12266240393088.

The previous prime is 31130231303299. The next prime is 31130231303321. The reversal of 31130231303320 is 2330313203113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130231303321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5807876295 + ... + 5807881654.

Almost surely, 2^{31130231303320} is an apocalyptic number.

It is an amenable number.

31130231303320 is an abundant number, since it is smaller than the sum of its proper divisors (39958207350680).

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

31130231303320 is a wasteful number, since it uses less digits than its factorization.

31130231303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615758027 (or 11615758023 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 31130231303320 its reverse (2330313203113), we get a palindrome (33460544506433).

The spelling of 31130231303320 in words is "thirty-one trillion, one hundred thirty billion, two hundred thirty-one million, three hundred three thousand, three hundred twenty".