23315340 has 48 divisors (see below), whose sum is σ = 65495808. Its totient is φ = 6197184.

The previous prime is 23315339. The next prime is 23315351. The reversal of 23315340 is 4351332.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31009 + ... + 31751.

It is an arithmetic number, because the mean of its divisors is an integer number (1364496).

Almost surely, 2^23315340 is an apocalyptic number.

23315340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23315340 is an abundant number, since it is smaller than the sum of its proper divisors (42180468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23315340 is a wasteful number, since it uses less digits than its factorization.

23315340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 23315340 is about 4828.5960692524. The cubic root of 23315340 is about 285.6804914792.

Adding to 23315340 its reverse (4351332), we get a palindrome (27666672).

The spelling of 23315340 in words is "twenty-three million, three hundred fifteen thousand, three hundred forty".