1231334231 has 2 divisors, whose sum is σ = 1231334232. Its totient is φ = 1231334230.

The previous prime is 1231334179. The next prime is 1231334243. The reversal of 1231334231 is 1324331321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231334231 - 2¹⁴ = 1231317847 is a prime.

It is a super-2 number, since 2×1231334231² = 3032367976864722722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231334197 and 1231334206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231334261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615667115 + 615667116.

It is an arithmetic number, because the mean of its divisors is an integer number (615667116).

Almost surely, 2^1231334231 is an apocalyptic number.

1231334231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231334231 is an equidigital number, since it uses as much as digits as its factorization.

1231334231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 1231334231 is about 35090.3723405723. The cubic root of 1231334231 is about 1071.8285416612.

Adding to 1231334231 its reverse (1324331321), we get a palindrome (2555665552).

The spelling of 1231334231 in words is "one billion, two hundred thirty-one million, three hundred thirty-four thousand, two hundred thirty-one".