15231114215 has 32 divisors (see below), whose sum is σ = 20665704960. Its totient is φ = 10715443200.

The previous prime is 15231114209. The next prime is 15231114253. The reversal of 15231114215 is 51241113251.

It is a de Polignac number, because none of the positive numbers 2^k-15231114215 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23246 + ... + 176075.

It is an arithmetic number, because the mean of its divisors is an integer number (645803280).

Almost surely, 2^15231114215 is an apocalyptic number.

15231114215 is a deficient number, since it is larger than the sum of its proper divisors (5434590745).

15231114215 is a wasteful number, since it uses less digits than its factorization.

15231114215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199403.

The product of its digits is 1200, while the sum is 26.

Adding to 15231114215 its reverse (51241113251), we get a palindrome (66472227466).

The spelling of 15231114215 in words is "fifteen billion, two hundred thirty-one million, one hundred fourteen thousand, two hundred fifteen".