321332131 has 2 divisors, whose sum is σ = 321332132. Its totient is φ = 321332130.

The previous prime is 321332101. The next prime is 321332153. The reversal of 321332131 is 131233123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321332131 - 2⁷ = 321332003 is a prime.

It is a super-2 number, since 2×321332131² = 206508676826002322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 321332099 and 321332108.

It is not a weakly prime, because it can be changed into another prime (321332101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160666065 + 160666066.

It is an arithmetic number, because the mean of its divisors is an integer number (160666066).

Almost surely, 2^321332131 is an apocalyptic number.

321332131 is a deficient number, since it is larger than the sum of its proper divisors (1).

321332131 is an equidigital number, since it uses as much as digits as its factorization.

321332131 is an evil number, because the sum of its binary digits is even.

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

The square root of 321332131 is about 17925.7393431903. The cubic root of 321332131 is about 684.9381946474.

Adding to 321332131 its reverse (131233123), we get a palindrome (452565254).

It can be divided in two parts, 3213 and 32131, that added together give a square (35344 = 188²).

The spelling of 321332131 in words is "three hundred twenty-one million, three hundred thirty-two thousand, one hundred thirty-one".