1312441231 has 8 divisors (see below), whose sum is σ = 1340141184. Its totient is φ = 1285004160.

The previous prime is 1312441223. The next prime is 1312441243. The reversal of 1312441231 is 1321442131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312441231 - 2³ = 1312441223 is a prime.

It is a super-2 number, since 2×1312441231² = 3445003969657590722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312441831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55615 + ... + 75616.

It is an arithmetic number, because the mean of its divisors is an integer number (167517648).

Almost surely, 2^1312441231 is an apocalyptic number.

1312441231 is a deficient number, since it is larger than the sum of its proper divisors (27699953).

1312441231 is a wasteful number, since it uses less digits than its factorization.

1312441231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131441.

The product of its digits is 576, while the sum is 22.

The square root of 1312441231 is about 36227.6307671368. The cubic root of 1312441231 is about 1094.8634431433.

Adding to 1312441231 its reverse (1321442131), we get a palindrome (2633883362).

The spelling of 1312441231 in words is "one billion, three hundred twelve million, four hundred forty-one thousand, two hundred thirty-one".