1316562431 has 4 divisors (see below), whose sum is σ = 1323384192. Its totient is φ = 1309740672.

The previous prime is 1316562419. The next prime is 1316562437. The reversal of 1316562431 is 1342656131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1342656131 = 4021 ⋅333911.

It is a cyclic number.

It is not a de Polignac number, because 1316562431 - 2⁶ = 1316562367 is a prime.

It is a super-2 number, since 2×1316562431² = 3466673269441259522, 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 (1316562437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3410591 + ... + 3410976.

It is an arithmetic number, because the mean of its divisors is an integer number (330846048).

Almost surely, 2^1316562431 is an apocalyptic number.

1316562431 is a deficient number, since it is larger than the sum of its proper divisors (6821761).

1316562431 is an equidigital number, since it uses as much as digits as its factorization.

1316562431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821760.

The product of its digits is 12960, while the sum is 32.

The square root of 1316562431 is about 36284.4654225469. The cubic root of 1316562431 is about 1096.0082401990.

The spelling of 1316562431 in words is "one billion, three hundred sixteen million, five hundred sixty-two thousand, four hundred thirty-one".