23031288 has 48 divisors (see below), whose sum is σ = 71288880. Its totient is φ = 6580224.

The previous prime is 23031271. The next prime is 23031293. The reversal of 23031288 is 88213032.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22345 + ... + 23352.

It is an arithmetic number, because the mean of its divisors is an integer number (1485185).

Almost surely, 2^23031288 is an apocalyptic number.

23031288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23031288 is an abundant number, since it is smaller than the sum of its proper divisors (48257592).

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

23031288 is a wasteful number, since it uses less digits than its factorization.

23031288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45716 (or 45709 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 23031288 is about 4799.0924141967. The cubic root of 23031288 is about 284.5155944969.

It can be divided in two parts, 230312 and 88, that added together give a square (230400 = 480²).

The spelling of 23031288 in words is "twenty-three million, thirty-one thousand, two hundred eighty-eight".