113113261 has 4 divisors (see below), whose sum is σ = 114211552. Its totient is φ = 112014972.

The previous prime is 113113243. The next prime is 113113279. The reversal of 113113261 is 162311311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (113113243) and next prime (113113279).

It is not a de Polignac number, because 113113261 - 2⁹ = 113112749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113113661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548991 + ... + 549196.

It is an arithmetic number, because the mean of its divisors is an integer number (28552888).

Almost surely, 2^113113261 is an apocalyptic number.

It is an amenable number.

113113261 is a deficient number, since it is larger than the sum of its proper divisors (1098291).

113113261 is a wasteful number, since it uses less digits than its factorization.

113113261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098290.

The product of its digits is 108, while the sum is 19.

The square root of 113113261 is about 10635.4718278034. The cubic root of 113113261 is about 483.6202839332.

Adding to 113113261 its reverse (162311311), we get a palindrome (275424572).

The spelling of 113113261 in words is "one hundred thirteen million, one hundred thirteen thousand, two hundred sixty-one".