5215907231 has 4 divisors (see below), whose sum is σ = 5218449912. Its totient is φ = 5213364552.

The previous prime is 5215907219. The next prime is 5215907233. The reversal of 5215907231 is 1327095125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5215907231 - 2⁶ = 5215907167 is a prime.

It is a super-2 number, since 2×5215907231² = 54411376484796174722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5215907191 and 5215907200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215907233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268261 + ... + 1272366.

It is an arithmetic number, because the mean of its divisors is an integer number (1304612478).

Almost surely, 2^5215907231 is an apocalyptic number.

5215907231 is a deficient number, since it is larger than the sum of its proper divisors (2542681).

5215907231 is a wasteful number, since it uses less digits than its factorization.

5215907231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542680.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 5215907231 is about 72221.2380882521. The cubic root of 5215907231 is about 1734.2430104944.

The spelling of 5215907231 in words is "five billion, two hundred fifteen million, nine hundred seven thousand, two hundred thirty-one".