113135437 has 2 divisors, whose sum is σ = 113135438. Its totient is φ = 113135436.

The previous prime is 113135431. The next prime is 113135471. The reversal of 113135437 is 734531311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103612041 + 9523396 = 10179^2 + 3086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113135437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113135431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56567718 + 56567719.

It is an arithmetic number, because the mean of its divisors is an integer number (56567719).

Almost surely, 2^113135437 is an apocalyptic number.

It is an amenable number.

113135437 is a deficient number, since it is larger than the sum of its proper divisors (1).

113135437 is an equidigital number, since it uses as much as digits as its factorization.

113135437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 113135437 is about 10636.5143256614. The cubic root of 113135437 is about 483.6518866605.

Adding to 113135437 its reverse (734531311), we get a palindrome (847666748).

The spelling of 113135437 in words is "one hundred thirteen million, one hundred thirty-five thousand, four hundred thirty-seven".