231672939 has 8 divisors (see below), whose sum is σ = 311631312. Its totient is φ = 153081600.

The previous prime is 231672913. The next prime is 231672943. The reversal of 231672939 is 939276132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231672939 - 2¹³ = 231664747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231672939.

It is not an unprimeable number, because it can be changed into a prime (231672239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341362 + ... + 342039.

It is an arithmetic number, because the mean of its divisors is an integer number (38953914).

Almost surely, 2^231672939 is an apocalyptic number.

231672939 is a deficient number, since it is larger than the sum of its proper divisors (79958373).

231672939 is a wasteful number, since it uses less digits than its factorization.

231672939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683517.

The product of its digits is 122472, while the sum is 42.

The square root of 231672939 is about 15220.8061218846. The cubic root of 231672939 is about 614.1744836513.

It can be divided in two parts, 23167 and 2939, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 231672939 in words is "two hundred thirty-one million, six hundred seventy-two thousand, nine hundred thirty-nine".