31045115131320 has 64 divisors (see below), whose sum is σ = 93167035920000. Its totient is φ = 8275880432768.

The previous prime is 31045115131313. The next prime is 31045115131343. The reversal of 31045115131320 is 2313151154013.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 43660470 + ... + 44365829.

It is an arithmetic number, because the mean of its divisors is an integer number (1455734936250).

Almost surely, 2^{31045115131320} is an apocalyptic number.

31045115131320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31045115131320 is an abundant number, since it is smaller than the sum of its proper divisors (62121920788680).

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

31045115131320 is a wasteful number, since it uses less digits than its factorization.

31045115131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88029252 (or 88029248 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 31045115131320 its reverse (2313151154013), we get a palindrome (33358266285333).

The spelling of 31045115131320 in words is "thirty-one trillion, forty-five billion, one hundred fifteen million, one hundred thirty-one thousand, three hundred twenty".