23519137 has 2 divisors, whose sum is σ = 23519138. Its totient is φ = 23519136.

The previous prime is 23519113. The next prime is 23519147. The reversal of 23519137 is 73191532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21752896 + 1766241 = 4664^2 + 1329^2 .

It is a cyclic number.

It is not a de Polignac number, because 23519137 - 2⁷ = 23519009 is a prime.

It is a super-4 number, since 4×23519137⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23519099 and 23519108.

It is not a weakly prime, because it can be changed into another prime (23519147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11759568 + 11759569.

It is an arithmetic number, because the mean of its divisors is an integer number (11759569).

Almost surely, 2^23519137 is an apocalyptic number.

It is an amenable number.

23519137 is a deficient number, since it is larger than the sum of its proper divisors (1).

23519137 is an equidigital number, since it uses as much as digits as its factorization.

23519137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 31.

The square root of 23519137 is about 4849.6532865763. The cubic root of 23519137 is about 286.5104459499.

The spelling of 23519137 in words is "twenty-three million, five hundred nineteen thousand, one hundred thirty-seven".