75631313 has 2 divisors, whose sum is σ = 75631314. Its totient is φ = 75631312.

The previous prime is 75631307. The next prime is 75631331. The reversal of 75631313 is 31313657.

It is a happy number.

Together with next prime (75631331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64529089 + 11102224 = 8033^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 75631313 - 2⁸ = 75631057 is a prime.

It is a super-2 number, since 2×75631313² = 11440191012207938, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75631373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37815656 + 37815657.

It is an arithmetic number, because the mean of its divisors is an integer number (37815657).

Almost surely, 2^75631313 is an apocalyptic number.

It is an amenable number.

75631313 is a deficient number, since it is larger than the sum of its proper divisors (1).

75631313 is an equidigital number, since it uses as much as digits as its factorization.

75631313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 29.

The square root of 75631313 is about 8696.6265298678. The cubic root of 75631313 is about 422.8962947189.

The spelling of 75631313 in words is "seventy-five million, six hundred thirty-one thousand, three hundred thirteen".