23311409 has 8 divisors (see below), whose sum is σ = 25465728. Its totient is φ = 21162960.

The previous prime is 23311367. The next prime is 23311427. The reversal of 23311409 is 90411332.

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

It is a cyclic number.

It is not a de Polignac number, because 23311409 - 2²⁰ = 22262833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23311429) 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, 13799 + ... + 15395.

It is an arithmetic number, because the mean of its divisors is an integer number (3183216).

Almost surely, 2^23311409 is an apocalyptic number.

It is an amenable number.

23311409 is a deficient number, since it is larger than the sum of its proper divisors (2154319).

23311409 is a wasteful number, since it uses less digits than its factorization.

23311409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 23311409 is about 4828.1889979577. The cubic root of 23311409 is about 285.6644351956.

The spelling of 23311409 in words is "twenty-three million, three hundred eleven thousand, four hundred nine".