1231044231 has 16 divisors (see below), whose sum is σ = 1654767200. Its totient is φ = 814036608.

The previous prime is 1231044209. The next prime is 1231044247. The reversal of 1231044231 is 1324401321.

It is not a de Polignac number, because 1231044231 - 2⁶ = 1231044167 is a prime.

It is a super-2 number, since 2×1231044231² = 3030939797356762722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231044198 and 1231044207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231044271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187065 + ... + 193533.

It is an arithmetic number, because the mean of its divisors is an integer number (103422950).

Almost surely, 2^1231044231 is an apocalyptic number.

1231044231 is a deficient number, since it is larger than the sum of its proper divisors (423722969).

1231044231 is a wasteful number, since it uses less digits than its factorization.

1231044231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6978.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1231044231 is about 35086.2399096854. The cubic root of 1231044231 is about 1071.7443904821.

Adding to 1231044231 its reverse (1324401321), we get a palindrome (2555445552).

The spelling of 1231044231 in words is "one billion, two hundred thirty-one million, forty-four thousand, two hundred thirty-one".