215293023 has 12 divisors (see below), whose sum is σ = 339249768. Its totient is φ = 130480560.

The previous prime is 215293019. The next prime is 215293031. The reversal of 215293023 is 320392512.

It is not a de Polignac number, because 215293023 - 2² = 215293019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215293073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1087240 + ... + 1087437.

It is an arithmetic number, because the mean of its divisors is an integer number (28270814).

Almost surely, 2^215293023 is an apocalyptic number.

215293023 is a deficient number, since it is larger than the sum of its proper divisors (123956745).

215293023 is a wasteful number, since it uses less digits than its factorization.

215293023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174694 (or 2174691 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 215293023 is about 14672.8668977811. The cubic root of 215293023 is about 599.3446761784.

The spelling of 215293023 in words is "two hundred fifteen million, two hundred ninety-three thousand, twenty-three".