231104145 has 16 divisors (see below), whose sum is σ = 378366912. Its totient is φ = 120388800.

The previous prime is 231104131. The next prime is 231104177. The reversal of 231104145 is 541401132.

It is not a de Polignac number, because 231104145 - 2⁵ = 231104113 is a prime.

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, 178506 + ... + 179795.

It is an arithmetic number, because the mean of its divisors is an integer number (23647932).

Almost surely, 2^231104145 is an apocalyptic number.

It is an amenable number.

231104145 is a deficient number, since it is larger than the sum of its proper divisors (147262767).

231104145 is a wasteful number, since it uses less digits than its factorization.

231104145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358352.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 231104145 is about 15202.1098864598. The cubic root of 231104145 is about 613.6714396511.

Adding to 231104145 its reverse (541401132), we get a palindrome (772505277).

The spelling of 231104145 in words is "two hundred thirty-one million, one hundred four thousand, one hundred forty-five".