23081137 has 2 divisors, whose sum is σ = 23081138. Its totient is φ = 23081136.

The previous prime is 23081131. The next prime is 23081173. The reversal of 23081137 is 73118032.

Together with next prime (23081173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 194481 = 4784^2 + 441^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23081137 is a prime.

It is not a weakly prime, because it can be changed into another prime (23081131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11540568 + 11540569.

It is an arithmetic number, because the mean of its divisors is an integer number (11540569).

Almost surely, 2^23081137 is an apocalyptic number.

It is an amenable number.

23081137 is a deficient number, since it is larger than the sum of its proper divisors (1).

23081137 is an equidigital number, since it uses as much as digits as its factorization.

23081137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 23081137 is about 4804.2831931517. The cubic root of 23081137 is about 284.7207154279.

Adding to 23081137 its reverse (73118032), we get a palindrome (96199169).

The spelling of 23081137 in words is "twenty-three million, eighty-one thousand, one hundred thirty-seven".