23211297 has 12 divisors (see below), whose sum is σ = 34160724. Its totient is φ = 15181920.

The previous prime is 23211277. The next prime is 23211311. The reversal of 23211297 is 79211232.

It can be written as a sum of positive squares in 2 ways, for example, as 11861136 + 11350161 = 3444^2 + 3369^2 .

It is not a de Polignac number, because 23211297 - 2⁶ = 23211233 is a prime.

It is a super-4 number, since 4×23211297⁴ (a number of 31 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23211297.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23854 + ... + 24807.

It is an arithmetic number, because the mean of its divisors is an integer number (2846727).

Almost surely, 2^23211297 is an apocalyptic number.

It is an amenable number.

23211297 is a deficient number, since it is larger than the sum of its proper divisors (10949427).

23211297 is a wasteful number, since it uses less digits than its factorization.

23211297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48720 (or 48717 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 23211297 is about 4817.8103947748. The cubic root of 23211297 is about 285.2549150471.

The spelling of 23211297 in words is "twenty-three million, two hundred eleven thousand, two hundred ninety-seven".