1312404231 has 8 divisors (see below), whose sum is σ = 1751735664. Its totient is φ = 874004480.

The previous prime is 1312404229. The next prime is 1312404239. The reversal of 1312404231 is 1324042131.

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 1312404231 - 2¹ = 1312404229 is a prime.

It is a super-2 number, since 2×1312404231² = 3444809731093402722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312404198 and 1312404207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312404239) 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, 229626 + ... + 235271.

It is an arithmetic number, because the mean of its divisors is an integer number (218966958).

Almost surely, 2^1312404231 is an apocalyptic number.

1312404231 is a deficient number, since it is larger than the sum of its proper divisors (439331433).

1312404231 is an equidigital number, since it uses as much as digits as its factorization.

1312404231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465841.

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

The square root of 1312404231 is about 36227.1201035909. The cubic root of 1312404231 is about 1094.8531543453.

Adding to 1312404231 its reverse (1324042131), we get a palindrome (2636446362).

Subtracting 1312404231 from its reverse (1324042131), we obtain a triangular number (11637900 = T₄₈₂₄).

The spelling of 1312404231 in words is "one billion, three hundred twelve million, four hundred four thousand, two hundred thirty-one".