1316431 has 2 divisors, whose sum is σ = 1316432. Its totient is φ = 1316430.

The previous prime is 1316417. The next prime is 1316437. The reversal of 1316431 is 1346131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316431 - 2⁷ = 1316303 is a prime.

It is a super-2 number, since 2×1316431² = 3465981155522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1316399 and 1316408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658215 + 658216.

It is an arithmetic number, because the mean of its divisors is an integer number (658216).

2^1316431 is an apocalyptic number.

1316431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316431 is an equidigital number, since it uses as much as digits as its factorization.

1316431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 1316431 is about 1147.3582701144. The cubic root of 1316431 is about 109.5971767881.

The spelling of 1316431 in words is "one million, three hundred sixteen thousand, four hundred thirty-one".