113213309 has 8 divisors (see below), whose sum is σ = 124061952. Its totient is φ = 102457440.

The previous prime is 113213279. The next prime is 113213323. The reversal of 113213309 is 903312311.

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-113213309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113210309) 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, 20624 + ... + 25529.

It is an arithmetic number, because the mean of its divisors is an integer number (15507744).

Almost surely, 2^113213309 is an apocalyptic number.

It is an amenable number.

113213309 is a deficient number, since it is larger than the sum of its proper divisors (10848643).

113213309 is a wasteful number, since it uses less digits than its factorization.

113213309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46387.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 113213309 is about 10640.1742936852. The cubic root of 113213309 is about 483.7628283271.

It can be divided in two parts, 1132 and 13309, that added together give a palindrome (14441).

The spelling of 113213309 in words is "one hundred thirteen million, two hundred thirteen thousand, three hundred nine".