7215883231 has 4 divisors (see below), whose sum is σ = 7267796200. Its totient is φ = 7163970264.

The previous prime is 7215883159. The next prime is 7215883247. The reversal of 7215883231 is 1323885127.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323885127 = 25409 ⋅52103.

It is a cyclic number.

It is not a de Polignac number, because 7215883231 - 2¹³ = 7215875039 is a prime.

It is a super-2 number, since 2×7215883231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215883261) 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, 25956276 + ... + 25956553.

It is an arithmetic number, because the mean of its divisors is an integer number (1816949050).

Almost surely, 2^7215883231 is an apocalyptic number.

7215883231 is a deficient number, since it is larger than the sum of its proper divisors (51912969).

7215883231 is a wasteful number, since it uses less digits than its factorization.

7215883231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51912968.

The product of its digits is 80640, while the sum is 40.

The square root of 7215883231 is about 84946.3550189177. The cubic root of 7215883231 is about 1932.3976422018.

The spelling of 7215883231 in words is "seven billion, two hundred fifteen million, eight hundred eighty-three thousand, two hundred thirty-one".