231522045 has 8 divisors (see below), whose sum is σ = 370435296. Its totient is φ = 123478416.

The previous prime is 231522029. The next prime is 231522089. The reversal of 231522045 is 540225132.

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

It is not a de Polignac number, because 231522045 - 2⁴ = 231522029 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, 7717387 + ... + 7717416.

It is an arithmetic number, because the mean of its divisors is an integer number (46304412).

Almost surely, 2^231522045 is an apocalyptic number.

It is an amenable number.

231522045 is a deficient number, since it is larger than the sum of its proper divisors (138913251).

231522045 is a wasteful number, since it uses less digits than its factorization.

231522045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15434811.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 231522045 is about 15215.8484811068. The cubic root of 231522045 is about 614.0411126259.

Adding to 231522045 its reverse (540225132), we get a palindrome (771747177).

The spelling of 231522045 in words is "two hundred thirty-one million, five hundred twenty-two thousand, forty-five".