15213130215 has 32 divisors (see below), whose sum is σ = 24893104896. Its totient is φ = 7931489280.

The previous prime is 15213130211. The next prime is 15213130217. The reversal of 15213130215 is 51203131251.

It is not a de Polignac number, because 15213130215 - 2² = 15213130211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213130211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73879 + ... + 189431.

It is an arithmetic number, because the mean of its divisors is an integer number (777909528).

Almost surely, 2^15213130215 is an apocalyptic number.

15213130215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15213130215 is a deficient number, since it is larger than the sum of its proper divisors (9679974681).

15213130215 is a wasteful number, since it uses less digits than its factorization.

15213130215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115759.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 15213130215 its reverse (51203131251), we get a palindrome (66416261466).

The spelling of 15213130215 in words is "fifteen billion, two hundred thirteen million, one hundred thirty thousand, two hundred fifteen".