451163431 has 2 divisors, whose sum is σ = 451163432. Its totient is φ = 451163430.

The previous prime is 451163389. The next prime is 451163441. The reversal of 451163431 is 134361154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451163431 - 2¹⁹ = 450639143 is a prime.

It is a super-2 number, since 2×451163431² = 407096882943383522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 451163431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451163441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225581715 + 225581716.

It is an arithmetic number, because the mean of its divisors is an integer number (225581716).

Almost surely, 2^451163431 is an apocalyptic number.

451163431 is a deficient number, since it is larger than the sum of its proper divisors (1).

451163431 is an equidigital number, since it uses as much as digits as its factorization.

451163431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 451163431 is about 21240.6080656840. The cubic root of 451163431 is about 766.9692701077.

The spelling of 451163431 in words is "four hundred fifty-one million, one hundred sixty-three thousand, four hundred thirty-one".