332131321 has 4 divisors (see below), whose sum is σ = 332260852. Its totient is φ = 332001792.

The previous prime is 332131309. The next prime is 332131411. The reversal of 332131321 is 123131233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123131233 = 89 ⋅1383497.

It can be written as a sum of positive squares in 2 ways, for example, as 317231721 + 14899600 = 17811^2 + 3860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-332131321 is a prime.

It is a super-2 number, since 2×332131321² = 220622428778410082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (332131421) 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, 60840 + ... + 66073.

It is an arithmetic number, because the mean of its divisors is an integer number (83065213).

Almost surely, 2^332131321 is an apocalyptic number.

It is an amenable number.

332131321 is a deficient number, since it is larger than the sum of its proper divisors (129531).

332131321 is a wasteful number, since it uses less digits than its factorization.

332131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129530.

The product of its digits is 324, while the sum is 19.

The square root of 332131321 is about 18224.4703901101. The cubic root of 332131321 is about 692.5268417439.

Adding to 332131321 its reverse (123131233), we get a palindrome (455262554).

The spelling of 332131321 in words is "three hundred thirty-two million, one hundred thirty-one thousand, three hundred twenty-one".