431214491 has 2 divisors, whose sum is σ = 431214492. Its totient is φ = 431214490.

The previous prime is 431214467. The next prime is 431214517. The reversal of 431214491 is 194412134.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431214491 is a prime.

It is not a weakly prime, because it can be changed into another prime (431214691) 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, 215607245 + 215607246.

It is an arithmetic number, because the mean of its divisors is an integer number (215607246).

Almost surely, 2^431214491 is an apocalyptic number.

431214491 is a deficient number, since it is larger than the sum of its proper divisors (1).

431214491 is an equidigital number, since it uses as much as digits as its factorization.

431214491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 431214491 is about 20765.7046834438. The cubic root of 431214491 is about 755.4941670768.

The spelling of 431214491 in words is "four hundred thirty-one million, two hundred fourteen thousand, four hundred ninety-one".