113512381 has 2 divisors, whose sum is σ = 113512382. Its totient is φ = 113512380.

The previous prime is 113512369. The next prime is 113512387. The reversal of 113512381 is 183215311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108868356 + 4644025 = 10434^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 113512381 - 2⁷ = 113512253 is a prime.

It is a super-2 number, since 2×113512381² = 25770121280578322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113512387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56756190 + 56756191.

It is an arithmetic number, because the mean of its divisors is an integer number (56756191).

Almost surely, 2^113512381 is an apocalyptic number.

It is an amenable number.

113512381 is a deficient number, since it is larger than the sum of its proper divisors (1).

113512381 is an equidigital number, since it uses as much as digits as its factorization.

113512381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 25.

The square root of 113512381 is about 10654.2189296072. The cubic root of 113512381 is about 484.1884340729.

Adding to 113512381 its reverse (183215311), we get a palindrome (296727692).

The spelling of 113512381 in words is "one hundred thirteen million, five hundred twelve thousand, three hundred eighty-one".