332131993 has 2 divisors, whose sum is σ = 332131994. Its totient is φ = 332131992.

The previous prime is 332131991. The next prime is 332132057. The reversal of 332131993 is 399131233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319265424 + 12866569 = 17868^2 + 3587^2 .

It is a cyclic number.

It is not a de Polignac number, because 332131993 - 2¹ = 332131991 is a prime.

It is a super-2 number, since 2×332131993² = 220623321548304098, which contains 22 as substring.

Together with 332131991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (332131991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166065996 + 166065997.

It is an arithmetic number, because the mean of its divisors is an integer number (166065997).

Almost surely, 2^332131993 is an apocalyptic number.

It is an amenable number.

332131993 is a deficient number, since it is larger than the sum of its proper divisors (1).

332131993 is an equidigital number, since it uses as much as digits as its factorization.

332131993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 34.

The square root of 332131993 is about 18224.4888268505. The cubic root of 332131993 is about 692.5273088059.

The spelling of 332131993 in words is "three hundred thirty-two million, one hundred thirty-one thousand, nine hundred ninety-three".