331481237 has 2 divisors, whose sum is σ = 331481238. Its totient is φ = 331481236.

The previous prime is 331481231. The next prime is 331481243. The reversal of 331481237 is 732184133.

It is a balanced prime because it is at equal distance from previous prime (331481231) and next prime (331481243).

It can be written as a sum of positive squares in only one way, i.e., 331458436 + 22801 = 18206^2 + 151^2 .

It is a cyclic number.

It is not a de Polignac number, because 331481237 - 2⁶ = 331481173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331481231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165740618 + 165740619.

It is an arithmetic number, because the mean of its divisors is an integer number (165740619).

Almost surely, 2^331481237 is an apocalyptic number.

It is an amenable number.

331481237 is a deficient number, since it is larger than the sum of its proper divisors (1).

331481237 is an equidigital number, since it uses as much as digits as its factorization.

331481237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 331481237 is about 18206.6261838925. The cubic root of 331481237 is about 692.0747166977.

The spelling of 331481237 in words is "three hundred thirty-one million, four hundred eighty-one thousand, two hundred thirty-seven".