1166996431 has 2 divisors, whose sum is σ = 1166996432. Its totient is φ = 1166996430.

The previous prime is 1166996353. The next prime is 1166996443. The reversal of 1166996431 is 1346996611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166996431 - 2¹⁵ = 1166963663 is a prime.

It is a super-2 number, since 2×1166996431² = 2723761339933475522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166996461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583498215 + 583498216.

It is an arithmetic number, because the mean of its divisors is an integer number (583498216).

Almost surely, 2^1166996431 is an apocalyptic number.

1166996431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166996431 is an equidigital number, since it uses as much as digits as its factorization.

1166996431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 1166996431 is about 34161.3294676890. The cubic root of 1166996431 is about 1052.8257764615.

The spelling of 1166996431 in words is "one billion, one hundred sixty-six million, nine hundred ninety-six thousand, four hundred thirty-one".