23871937 has 2 divisors, whose sum is σ = 23871938. Its totient is φ = 23871936.

The previous prime is 23871863. The next prime is 23871971. The reversal of 23871937 is 73917832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21169201 + 2702736 = 4601^2 + 1644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23871937 is a prime.

It is a super-2 number, since 2×23871937² = 1139738752263938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23871937.

It is not a weakly prime, because it can be changed into another prime (23871037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11935968 + 11935969.

It is an arithmetic number, because the mean of its divisors is an integer number (11935969).

Almost surely, 2^23871937 is an apocalyptic number.

It is an amenable number.

23871937 is a deficient number, since it is larger than the sum of its proper divisors (1).

23871937 is an equidigital number, since it uses as much as digits as its factorization.

23871937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 23871937 is about 4885.8916279426. The cubic root of 23871937 is about 287.9359465640.

The spelling of 23871937 in words is "twenty-three million, eight hundred seventy-one thousand, nine hundred thirty-seven".