31132133321 has 8 divisors (see below), whose sum is σ = 31684607424. Its totient is φ = 30582825840.

The previous prime is 31132133297. The next prime is 31132133341. The reversal of 31132133321 is 12333123113.

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 31132133321 - 2²⁶ = 31065024457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132133341) 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 7 ways as a sum of consecutive naturals, for example, 771815 + ... + 811148.

It is an arithmetic number, because the mean of its divisors is an integer number (3960575928).

Almost surely, 2^31132133321 is an apocalyptic number.

It is an amenable number.

31132133321 is a deficient number, since it is larger than the sum of its proper divisors (552474103).

31132133321 is a wasteful number, since it uses less digits than its factorization.

31132133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583311.

The product of its digits is 972, while the sum is 23.

Adding to 31132133321 its reverse (12333123113), we get a palindrome (43465256434).

The spelling of 31132133321 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, three hundred twenty-one".