237116813 has 2 divisors, whose sum is σ = 237116814. Its totient is φ = 237116812.

The previous prime is 237116809. The next prime is 237116839. The reversal of 237116813 is 318611732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143472484 + 93644329 = 11978^2 + 9677^2 .

It is a cyclic number.

It is not a de Polignac number, because 237116813 - 2² = 237116809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 237116813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (237116213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118558406 + 118558407.

It is an arithmetic number, because the mean of its divisors is an integer number (118558407).

Almost surely, 2^237116813 is an apocalyptic number.

It is an amenable number.

237116813 is a deficient number, since it is larger than the sum of its proper divisors (1).

237116813 is an equidigital number, since it uses as much as digits as its factorization.

237116813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 237116813 is about 15398.5977608352. The cubic root of 237116813 is about 618.9479322145.

The spelling of 237116813 in words is "two hundred thirty-seven million, one hundred sixteen thousand, eight hundred thirteen".