166514431 has 2 divisors, whose sum is σ = 166514432. Its totient is φ = 166514430.

The previous prime is 166514377. The next prime is 166514441. The reversal of 166514431 is 134415661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166514431 - 2¹⁷ = 166383359 is a prime.

It is a super-2 number, since 2×166514431² = 55454111462507522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166514393 and 166514402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166514441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83257215 + 83257216.

It is an arithmetic number, because the mean of its divisors is an integer number (83257216).

Almost surely, 2^166514431 is an apocalyptic number.

166514431 is a deficient number, since it is larger than the sum of its proper divisors (1).

166514431 is an equidigital number, since it uses as much as digits as its factorization.

166514431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 166514431 is about 12904.0470783394. The cubic root of 166514431 is about 550.1536000749.

The spelling of 166514431 in words is "one hundred sixty-six million, five hundred fourteen thousand, four hundred thirty-one".