23311279 has 2 divisors, whose sum is σ = 23311280. Its totient is φ = 23311278.

The previous prime is 23311261. The next prime is 23311291. The reversal of 23311279 is 97211332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23311279 - 2¹³ = 23303087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23311219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655639 + 11655640.

It is an arithmetic number, because the mean of its divisors is an integer number (11655640).

Almost surely, 2^23311279 is an apocalyptic number.

23311279 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311279 is an equidigital number, since it uses as much as digits as its factorization.

23311279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

The square root of 23311279 is about 4828.1755353342. The cubic root of 23311279 is about 285.6639041760.

The spelling of 23311279 in words is "twenty-three million, three hundred eleven thousand, two hundred seventy-nine".