15015132231 has 16 divisors (see below), whose sum is σ = 21844381440. Its totient is φ = 9098334720.

The previous prime is 15015132229. The next prime is 15015132233. The reversal of 15015132231 is 13223151051.

It is an interprime number because it is at equal distance from previous prime (15015132229) and next prime (15015132233).

It is not a de Polignac number, because 15015132231 - 2¹ = 15015132229 is a prime.

It is a super-2 number, since 2×15015132231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15015132233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142926 + ... + 224628.

It is an arithmetic number, because the mean of its divisors is an integer number (1365273840).

Almost surely, 2^15015132231 is an apocalyptic number.

15015132231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15015132231 is a deficient number, since it is larger than the sum of its proper divisors (6829249209).

15015132231 is a wasteful number, since it uses less digits than its factorization.

15015132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87286.

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

Adding to 15015132231 its reverse (13223151051), we get a palindrome (28238283282).

The spelling of 15015132231 in words is "fifteen billion, fifteen million, one hundred thirty-two thousand, two hundred thirty-one".