188412313 has 2 divisors, whose sum is σ = 188412314. Its totient is φ = 188412312.

The previous prime is 188412281. The next prime is 188412361. The reversal of 188412313 is 313214881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132641289 + 55771024 = 11517^2 + 7468^2 .

It is a cyclic number.

It is not a de Polignac number, because 188412313 - 2⁵ = 188412281 is a prime.

It is not a weakly prime, because it can be changed into another prime (188412373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94206156 + 94206157.

It is an arithmetic number, because the mean of its divisors is an integer number (94206157).

Almost surely, 2^188412313 is an apocalyptic number.

It is an amenable number.

188412313 is a deficient number, since it is larger than the sum of its proper divisors (1).

188412313 is an equidigital number, since it uses as much as digits as its factorization.

188412313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 31.

The square root of 188412313 is about 13726.3364740924. The cubic root of 188412313 is about 573.2839198971.

The spelling of 188412313 in words is "one hundred eighty-eight million, four hundred twelve thousand, three hundred thirteen".