231148445 has 16 divisors (see below), whose sum is σ = 303022080. Its totient is φ = 167870400.

The previous prime is 231148417. The next prime is 231148451. The reversal of 231148445 is 544841132.

It is not a de Polignac number, because 231148445 - 2¹⁸ = 230886301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42596 + ... + 47714.

It is an arithmetic number, because the mean of its divisors is an integer number (18938880).

Almost surely, 2^231148445 is an apocalyptic number.

It is an amenable number.

231148445 is a deficient number, since it is larger than the sum of its proper divisors (71873635).

231148445 is a wasteful number, since it uses less digits than its factorization.

231148445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5956.

The product of its digits is 15360, while the sum is 32.

The square root of 231148445 is about 15203.5668512359. The cubic root of 231148445 is about 613.7106483924.

Adding to 231148445 its reverse (544841132), we get a palindrome (775989577).

The spelling of 231148445 in words is "two hundred thirty-one million, one hundred forty-eight thousand, four hundred forty-five".