113512261 has 2 divisors, whose sum is σ = 113512262. Its totient is φ = 113512260.

The previous prime is 113512253. The next prime is 113512279. The reversal of 113512261 is 162215311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101304225 + 12208036 = 10065^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 113512261 - 2³ = 113512253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113512361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56756130 + 56756131.

It is an arithmetic number, because the mean of its divisors is an integer number (56756131).

Almost surely, 2^113512261 is an apocalyptic number.

It is an amenable number.

113512261 is a deficient number, since it is larger than the sum of its proper divisors (1).

113512261 is an equidigital number, since it uses as much as digits as its factorization.

113512261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

The square root of 113512261 is about 10654.2132980338. The cubic root of 113512261 is about 484.1882634524.

Adding to 113512261 its reverse (162215311), we get a palindrome (275727572).

The spelling of 113512261 in words is "one hundred thirteen million, five hundred twelve thousand, two hundred sixty-one".