231375113 has 2 divisors, whose sum is σ = 231375114. Its totient is φ = 231375112.

The previous prime is 231375037. The next prime is 231375181. The reversal of 231375113 is 311573132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145033849 + 86341264 = 12043^2 + 9292^2 .

It is a cyclic number.

It is not a de Polignac number, because 231375113 - 2²⁴ = 214597897 is a prime.

It is a super-3 number, since 3×231375113³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (231374113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115687556 + 115687557.

It is an arithmetic number, because the mean of its divisors is an integer number (115687557).

Almost surely, 2^231375113 is an apocalyptic number.

It is an amenable number.

231375113 is a deficient number, since it is larger than the sum of its proper divisors (1).

231375113 is an equidigital number, since it uses as much as digits as its factorization.

231375113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 26.

The square root of 231375113 is about 15211.0194595892. The cubic root of 231375113 is about 613.9111878037.

The spelling of 231375113 in words is "two hundred thirty-one million, three hundred seventy-five thousand, one hundred thirteen".