231373887 has 8 divisors (see below), whose sum is σ = 324735360. Its totient is φ = 146130840.

The previous prime is 231373867. The next prime is 231373897. The reversal of 231373887 is 788373132.

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

It is not a de Polignac number, because 231373887 - 2¹² = 231369791 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231373817) 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, 2029539 + ... + 2029652.

It is an arithmetic number, because the mean of its divisors is an integer number (40591920).

Almost surely, 2^231373887 is an apocalyptic number.

231373887 is a deficient number, since it is larger than the sum of its proper divisors (93361473).

231373887 is a wasteful number, since it uses less digits than its factorization.

231373887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059213.

The product of its digits is 169344, while the sum is 42.

The square root of 231373887 is about 15210.9791598043. The cubic root of 231373887 is about 613.9101034802.

The spelling of 231373887 in words is "two hundred thirty-one million, three hundred seventy-three thousand, eight hundred eighty-seven".