23142277 has 2 divisors, whose sum is σ = 23142278. Its totient is φ = 23142276.

The previous prime is 23142239. The next prime is 23142289. The reversal of 23142277 is 77224132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15992001 + 7150276 = 3999^2 + 2674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23142277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23142677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571138 + 11571139.

It is an arithmetic number, because the mean of its divisors is an integer number (11571139).

Almost surely, 2^23142277 is an apocalyptic number.

It is an amenable number.

23142277 is a deficient number, since it is larger than the sum of its proper divisors (1).

23142277 is an equidigital number, since it uses as much as digits as its factorization.

23142277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 28.

The square root of 23142277 is about 4810.6420569400. The cubic root of 23142277 is about 284.9718942223.

The spelling of 23142277 in words is "twenty-three million, one hundred forty-two thousand, two hundred seventy-seven".