1307431 has 2 divisors, whose sum is σ = 1307432. Its totient is φ = 1307430.

The previous prime is 1307417. The next prime is 1307437. The reversal of 1307431 is 1347031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1307431 - 2⁷ = 1307303 is a prime.

It is a super-2 number, since 2×1307431² = 3418751639522, which contains 22 as substring.

1307431 is a lucky number.

It is equal to p₁₀₀₅₄₉ and since 1307431 and 100549 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 1307399 and 1307408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1307437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653715 + 653716.

It is an arithmetic number, because the mean of its divisors is an integer number (653716).

2^1307431 is an apocalyptic number.

1307431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307431 is an equidigital number, since it uses as much as digits as its factorization.

1307431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 1307431 is about 1143.4294906115. The cubic root of 1307431 is about 109.3468456513.

The spelling of 1307431 in words is "one million, three hundred seven thousand, four hundred thirty-one".