113431211 has 8 divisors (see below), whose sum is σ = 114576960. Its totient is φ = 112291272.

The previous prime is 113431189. The next prime is 113431231. The reversal of 113431211 is 112134311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113431211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113431211.

It is not an unprimeable number, because it can be changed into a prime (113431231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44900 + ... + 47358.

It is an arithmetic number, because the mean of its divisors is an integer number (14322120).

Almost surely, 2^113431211 is an apocalyptic number.

113431211 is a deficient number, since it is larger than the sum of its proper divisors (1145749).

113431211 is a wasteful number, since it uses less digits than its factorization.

113431211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905.

The product of its digits is 72, while the sum is 17.

The square root of 113431211 is about 10650.4089592841. The cubic root of 113431211 is about 484.0729960140.

Adding to 113431211 its reverse (112134311), we get a palindrome (225565522).

The spelling of 113431211 in words is "one hundred thirteen million, four hundred thirty-one thousand, two hundred eleven".