23481637 has 2 divisors, whose sum is σ = 23481638. Its totient is φ = 23481636.

The previous prime is 23481611. The next prime is 23481649. The reversal of 23481637 is 73618432.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22791076 + 690561 = 4774^2 + 831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23481637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23481037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11740818 + 11740819.

It is an arithmetic number, because the mean of its divisors is an integer number (11740819).

Almost surely, 2^23481637 is an apocalyptic number.

It is an amenable number.

23481637 is a deficient number, since it is larger than the sum of its proper divisors (1).

23481637 is an equidigital number, since it uses as much as digits as its factorization.

23481637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 23481637 is about 4845.7854884425. The cubic root of 23481637 is about 286.3580897771.

The spelling of 23481637 in words is "twenty-three million, four hundred eighty-one thousand, six hundred thirty-seven".