231550473 has 32 divisors (see below), whose sum is σ = 405181440. Its totient is φ = 113952960.

The previous prime is 231550441. The next prime is 231550519. The reversal of 231550473 is 374055132.

231550473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231550473 - 2⁵ = 231550441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231550473.

It is not an unprimeable number, because it can be changed into a prime (231550433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21990 + ... + 30767.

It is an arithmetic number, because the mean of its divisors is an integer number (12661920).

Almost surely, 2^231550473 is an apocalyptic number.

It is an amenable number.

231550473 is a deficient number, since it is larger than the sum of its proper divisors (173630967).

231550473 is a wasteful number, since it uses less digits than its factorization.

231550473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52797.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 231550473 is about 15216.7826100001. The cubic root of 231550473 is about 614.0662437767.

The spelling of 231550473 in words is "two hundred thirty-one million, five hundred fifty thousand, four hundred seventy-three".