13231432215 has 40 divisors (see below), whose sum is σ = 23940314640. Its totient is φ = 6990789888.

The previous prime is 13231432187. The next prime is 13231432241. The reversal of 13231432215 is 51223413231.

13231432215 is a `hidden beast` number, since 1 + 323 + 1 + 4 + 322 + 15 = 666.

It is not a de Polignac number, because 13231432215 - 2¹⁴ = 13231415831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 109330 + ... + 195999.

It is an arithmetic number, because the mean of its divisors is an integer number (598507866).

Almost surely, 2^13231432215 is an apocalyptic number.

13231432215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13231432215 is a deficient number, since it is larger than the sum of its proper divisors (10708882425).

13231432215 is a wasteful number, since it uses less digits than its factorization.

13231432215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305453 (or 305444 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

Adding to 13231432215 its reverse (51223413231), we get a palindrome (64454845446).

The spelling of 13231432215 in words is "thirteen billion, two hundred thirty-one million, four hundred thirty-two thousand, two hundred fifteen".