232431215 has 16 divisors (see below), whose sum is σ = 297243648. Its totient is φ = 174072096.

The previous prime is 232431181. The next prime is 232431217. The reversal of 232431215 is 512134232.

It is a de Polignac number, because none of the positive numbers 2^k-232431215 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232431217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16097 + ... + 26906.

It is an arithmetic number, because the mean of its divisors is an integer number (18577728).

Almost surely, 2^232431215 is an apocalyptic number.

232431215 is a deficient number, since it is larger than the sum of its proper divisors (64812433).

232431215 is a wasteful number, since it uses less digits than its factorization.

232431215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43078.

The product of its digits is 1440, while the sum is 23.

The square root of 232431215 is about 15245.6949661208. The cubic root of 232431215 is about 614.8438275317.

Adding to 232431215 its reverse (512134232), we get a palindrome (744565447).

The spelling of 232431215 in words is "two hundred thirty-two million, four hundred thirty-one thousand, two hundred fifteen".