431015997 has 8 divisors (see below), whose sum is σ = 590220256. Its totient is φ = 279577872.

The previous prime is 431015993. The next prime is 431016031. The reversal of 431015997 is 799510134.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 431015997 - 2² = 431015993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431015993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1941403 + ... + 1941624.

It is an arithmetic number, because the mean of its divisors is an integer number (73777532).

Almost surely, 2^431015997 is an apocalyptic number.

It is an amenable number.

431015997 is a deficient number, since it is larger than the sum of its proper divisors (159204259).

431015997 is a wasteful number, since it uses less digits than its factorization.

431015997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883067.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 431015997 is about 20760.9247626400. The cubic root of 431015997 is about 755.3782278107.

The spelling of 431015997 in words is "four hundred thirty-one million, fifteen thousand, nine hundred ninety-seven".