231922445 has 8 divisors (see below), whose sum is σ = 285095160. Its totient is φ = 181012480.

The previous prime is 231922429. The next prime is 231922459. The reversal of 231922445 is 544229132.

It can be written as a sum of positive squares in 4 ways, for example, as 11162281 + 220760164 = 3341^2 + 14858^2 .

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

It is not a de Polignac number, because 231922445 - 2⁴ = 231922429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565460 + ... + 565869.

It is an arithmetic number, because the mean of its divisors is an integer number (35636895).

Almost surely, 2^231922445 is an apocalyptic number.

It is an amenable number.

231922445 is a deficient number, since it is larger than the sum of its proper divisors (53172715).

231922445 is a wasteful number, since it uses less digits than its factorization.

231922445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131375.

The product of its digits is 17280, while the sum is 32.

The square root of 231922445 is about 15229.0001313284. Note that the first 3 decimals coincide. The cubic root of 231922445 is about 614.3948881007.

The spelling of 231922445 in words is "two hundred thirty-one million, nine hundred twenty-two thousand, four hundred forty-five".