23247137 has 4 divisors (see below), whose sum is σ = 23875476. Its totient is φ = 22618800.

The previous prime is 23247131. The next prime is 23247139. The reversal of 23247137 is 73174232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14714896 + 8532241 = 3836^2 + 2921^2 .

It is a cyclic number.

It is not a de Polignac number, because 23247137 - 2⁶ = 23247073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23247131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314114 + ... + 314187.

It is an arithmetic number, because the mean of its divisors is an integer number (5968869).

Almost surely, 2^23247137 is an apocalyptic number.

It is an amenable number.

23247137 is a deficient number, since it is larger than the sum of its proper divisors (628339).

23247137 is an equidigital number, since it uses as much as digits as its factorization.

23247137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628338.

The product of its digits is 7056, while the sum is 29.

The square root of 23247137 is about 4821.5284920863. The cubic root of 23247137 is about 285.4016579412.

The spelling of 23247137 in words is "twenty-three million, two hundred forty-seven thousand, one hundred thirty-seven".