23031315 has 24 divisors (see below), whose sum is σ = 40316640. Its totient is φ = 12161664.

The previous prime is 23031313. The next prime is 23031319. The reversal of 23031315 is 51313032.

23031315 = T₂ + T₃ + ... + T₅₁₆.

It is not a de Polignac number, because 23031315 - 2¹ = 23031313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23031313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2151 + ... + 7119.

It is an arithmetic number, because the mean of its divisors is an integer number (1679860).

Almost surely, 2^23031315 is an apocalyptic number.

23031315 is a deficient number, since it is larger than the sum of its proper divisors (17285325).

23031315 is a wasteful number, since it uses less digits than its factorization.

23031315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083 (or 5080 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 23031315 is about 4799.0952272277. The cubic root of 23031315 is about 284.5157056778.

Adding to 23031315 its reverse (51313032), we get a palindrome (74344347).

The spelling of 23031315 in words is "twenty-three million, thirty-one thousand, three hundred fifteen".