23280331 has 2 divisors, whose sum is σ = 23280332. Its totient is φ = 23280330.

The previous prime is 23280317. The next prime is 23280371. The reversal of 23280331 is 13308232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23280331 is a prime.

It is a super-2 number, since 2×23280331² = 1083947622939122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23280371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11640165 + 11640166.

It is an arithmetic number, because the mean of its divisors is an integer number (11640166).

Almost surely, 2^23280331 is an apocalyptic number.

23280331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23280331 is an equidigital number, since it uses as much as digits as its factorization.

23280331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23280331 is about 4824.9695335826. The cubic root of 23280331 is about 285.5374326125.

Adding to 23280331 its reverse (13308232), we get a palindrome (36588563).

The spelling of 23280331 in words is "twenty-three million, two hundred eighty thousand, three hundred thirty-one".