23403937 has 2 divisors, whose sum is σ = 23403938. Its totient is φ = 23403936.

The previous prime is 23403929. The next prime is 23403967. The reversal of 23403937 is 73930432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14107536 + 9296401 = 3756^2 + 3049^2 .

It is a cyclic number.

It is not a de Polignac number, because 23403937 - 2³ = 23403929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23403899 and 23403908.

It is not a weakly prime, because it can be changed into another prime (23403967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701968 + 11701969.

It is an arithmetic number, because the mean of its divisors is an integer number (11701969).

Almost surely, 2^23403937 is an apocalyptic number.

It is an amenable number.

23403937 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403937 is an equidigital number, since it uses as much as digits as its factorization.

23403937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 23403937 is about 4837.7615691557. The cubic root of 23403937 is about 286.0418907782.

The spelling of 23403937 in words is "twenty-three million, four hundred three thousand, nine hundred thirty-seven".