23490331 has 2 divisors, whose sum is σ = 23490332. Its totient is φ = 23490330.

The previous prime is 23490329. The next prime is 23490347. The reversal of 23490331 is 13309432.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23490331 - 2¹ = 23490329 is a prime.

It is a super-2 number, since 2×23490331² = 1103591300979122, which contains 22 as substring.

Together with 23490329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23490296 and 23490305.

It is not a weakly prime, because it can be changed into another prime (23490391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11745165 + 11745166.

It is an arithmetic number, because the mean of its divisors is an integer number (11745166).

Almost surely, 2^23490331 is an apocalyptic number.

23490331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23490331 is an equidigital number, since it uses as much as digits as its factorization.

23490331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 23490331 is about 4846.6824736102. The cubic root of 23490331 is about 286.3934264679.

Adding to 23490331 its reverse (13309432), we get a palindrome (36799763).

The spelling of 23490331 in words is "twenty-three million, four hundred ninety thousand, three hundred thirty-one".