231430045 has 24 divisors (see below), whose sum is σ = 348872832. Its totient is φ = 144265440.

The previous prime is 231430007. The next prime is 231430057. The reversal of 231430045 is 540034132.

It is not a de Polignac number, because 231430045 - 2⁷ = 231429917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231429998 and 231430025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23089 + ... + 31558.

It is an arithmetic number, because the mean of its divisors is an integer number (14536368).

Almost surely, 2^231430045 is an apocalyptic number.

It is an amenable number.

231430045 is a deficient number, since it is larger than the sum of its proper divisors (117442787).

231430045 is a wasteful number, since it uses less digits than its factorization.

231430045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54681 (or 54670 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 231430045 is about 15212.8250170703. The cubic root of 231430045 is about 613.9597679361.

Adding to 231430045 its reverse (540034132), we get a palindrome (771464177).

The spelling of 231430045 in words is "two hundred thirty-one million, four hundred thirty thousand, forty-five".