215271023 has 8 divisors (see below), whose sum is σ = 235737216. Its totient is φ = 194954200.

The previous prime is 215271019. The next prime is 215271047. The reversal of 215271023 is 320172512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215271023 - 2² = 215271019 is a prime.

It is a super-2 number, since 2×215271023² = 92683226686933058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215271023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215271523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34313 + ... + 40098.

It is an arithmetic number, because the mean of its divisors is an integer number (29467152).

Almost surely, 2^215271023 is an apocalyptic number.

215271023 is a deficient number, since it is larger than the sum of its proper divisors (20466193).

215271023 is a wasteful number, since it uses less digits than its factorization.

215271023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74685.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 215271023 is about 14672.1171955516. The cubic root of 215271023 is about 599.3242605423.

The spelling of 215271023 in words is "two hundred fifteen million, two hundred seventy-one thousand, twenty-three".