23319397 has 2 divisors, whose sum is σ = 23319398. Its totient is φ = 23319396.

The previous prime is 23319391. The next prime is 23319407. The reversal of 23319397 is 79391332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17297281 + 6022116 = 4159^2 + 2454^2 .

It is a cyclic number.

It is not a de Polignac number, because 23319397 - 2¹⁹ = 22795109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23319391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11659698 + 11659699.

It is an arithmetic number, because the mean of its divisors is an integer number (11659699).

Almost surely, 2^23319397 is an apocalyptic number.

It is an amenable number.

23319397 is a deficient number, since it is larger than the sum of its proper divisors (1).

23319397 is an equidigital number, since it uses as much as digits as its factorization.

23319397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 37.

The square root of 23319397 is about 4829.0161523855. The cubic root of 23319397 is about 285.6970605211.

It can be divided in two parts, 23319 and 397, that added together give a square (23716 = 154²).

The spelling of 23319397 in words is "twenty-three million, three hundred nineteen thousand, three hundred ninety-seven".