231872451 has 16 divisors (see below), whose sum is σ = 318528768. Its totient is φ = 149925600.

The previous prime is 231872449. The next prime is 231872471. The reversal of 231872451 is 154278132.

It is not a de Polignac number, because 231872451 - 2¹ = 231872449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231872471) 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, 33586 + ... + 39896.

It is an arithmetic number, because the mean of its divisors is an integer number (19908048).

Almost surely, 2^231872451 is an apocalyptic number.

231872451 is a deficient number, since it is larger than the sum of its proper divisors (86656317).

231872451 is a wasteful number, since it uses less digits than its factorization.

231872451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6682.

The product of its digits is 13440, while the sum is 33.

The square root of 231872451 is about 15227.3586350358. The cubic root of 231872451 is about 614.3507379030.

The spelling of 231872451 in words is "two hundred thirty-one million, eight hundred seventy-two thousand, four hundred fifty-one".