31232133313 has 4 divisors (see below), whose sum is σ = 31232655360. Its totient is φ = 31231611268.

The previous prime is 31232133259. The next prime is 31232133319. The reversal of 31232133313 is 31333123213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31232133313 - 2⁹ = 31232132801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31232133319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157633 + ... + 295486.

It is an arithmetic number, because the mean of its divisors is an integer number (7808163840).

Almost surely, 2^31232133313 is an apocalyptic number.

It is an amenable number.

31232133313 is a deficient number, since it is larger than the sum of its proper divisors (522047).

31232133313 is an equidigital number, since it uses as much as digits as its factorization.

31232133313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522046.

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

Adding to 31232133313 its reverse (31333123213), we get a palindrome (62565256526).

The spelling of 31232133313 in words is "thirty-one billion, two hundred thirty-two million, one hundred thirty-three thousand, three hundred thirteen".