1163431 has 2 divisors, whose sum is σ = 1163432. Its totient is φ = 1163430.

The previous prime is 1163423. The next prime is 1163441. The reversal of 1163431 is 1343611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1163431 - 2³ = 1163423 is a prime.

It is a super-2 number, since 2×1163431² = 2707143383522, which contains 22 as substring.

1163431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1163399 and 1163408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581715 + 581716.

It is an arithmetic number, because the mean of its divisors is an integer number (581716).

2^1163431 is an apocalyptic number.

1163431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163431 is an equidigital number, since it uses as much as digits as its factorization.

1163431 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1163431 is about 1078.6245871479. The cubic root of 1163431 is about 105.1752477825.

The spelling of 1163431 in words is "one million, one hundred sixty-three thousand, four hundred thirty-one".