431247071 has 2 divisors, whose sum is σ = 431247072. Its totient is φ = 431247070.

The previous prime is 431247067. The next prime is 431247101. The reversal of 431247071 is 170742134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431247071 - 2² = 431247067 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431247031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215623535 + 215623536.

It is an arithmetic number, because the mean of its divisors is an integer number (215623536).

Almost surely, 2^431247071 is an apocalyptic number.

431247071 is a deficient number, since it is larger than the sum of its proper divisors (1).

431247071 is an equidigital number, since it uses as much as digits as its factorization.

431247071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 431247071 is about 20766.4891351427. The cubic root of 431247071 is about 755.5131934783.

The spelling of 431247071 in words is "four hundred thirty-one million, two hundred forty-seven thousand, seventy-one".