7215131213 has 8 divisors (see below), whose sum is σ = 7251029280. Its totient is φ = 7179269680.

The previous prime is 7215131197. The next prime is 7215131219. The reversal of 7215131213 is 3121315127.

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 7215131213 - 2⁴ = 7215131197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215131219) 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, 441203 + ... + 457263.

It is an arithmetic number, because the mean of its divisors is an integer number (906378660).

Almost surely, 2^7215131213 is an apocalyptic number.

It is an amenable number.

7215131213 is a deficient number, since it is larger than the sum of its proper divisors (35898067).

7215131213 is a wasteful number, since it uses less digits than its factorization.

7215131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18267.

The product of its digits is 1260, while the sum is 26.

The square root of 7215131213 is about 84941.9284746938. The cubic root of 7215131213 is about 1932.3305102814.

The spelling of 7215131213 in words is "seven billion, two hundred fifteen million, one hundred thirty-one thousand, two hundred thirteen".