31132131313 has 8 divisors (see below), whose sum is σ = 32774060000. Its totient is φ = 29490542208.

The previous prime is 31132131299. The next prime is 31132131319. The reversal of 31132131313 is 31313123113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31132131313 - 2⁹ = 31132130801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132131319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115438 + ... + 274936.

It is an arithmetic number, because the mean of its divisors is an integer number (4096757500).

Almost surely, 2^31132131313 is an apocalyptic number.

It is an amenable number.

31132131313 is a deficient number, since it is larger than the sum of its proper divisors (1641928687).

31132131313 is a wasteful number, since it uses less digits than its factorization.

31132131313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169791.

The product of its digits is 486, while the sum is 22.

Adding to 31132131313 its reverse (31313123113), we get a palindrome (62445254426).

The spelling of 31132131313 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty-one thousand, three hundred thirteen".