7215331223 has 4 divisors (see below), whose sum is σ = 7286770248. Its totient is φ = 7143892200.

The previous prime is 7215331213. The next prime is 7215331231. The reversal of 7215331223 is 3221335127.

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 7215331223 - 2¹² = 7215327127 is a prime.

It is a super-2 number, since 2×7215331223² (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 (7215331213) 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, 35719361 + ... + 35719562.

It is an arithmetic number, because the mean of its divisors is an integer number (1821692562).

Almost surely, 2^7215331223 is an apocalyptic number.

7215331223 is a deficient number, since it is larger than the sum of its proper divisors (71439025).

7215331223 is a wasteful number, since it uses less digits than its factorization.

7215331223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71439024.

The product of its digits is 7560, while the sum is 29.

The square root of 7215331223 is about 84943.1058002944. The cubic root of 7215331223 is about 1932.3483654362.

The spelling of 7215331223 in words is "seven billion, two hundred fifteen million, three hundred thirty-one thousand, two hundred twenty-three".