431221017 has 16 divisors (see below), whose sum is σ = 615149120. Its totient is φ = 267883200.

The previous prime is 431221013. The next prime is 431221027. The reversal of 431221017 is 710122134.

It is not a de Polignac number, because 431221017 - 2² = 431221013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431220984 and 431221002.

It is not an unprimeable number, because it can be changed into a prime (431221013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58534 + ... + 65487.

It is an arithmetic number, because the mean of its divisors is an integer number (38446820).

Almost surely, 2^431221017 is an apocalyptic number.

It is an amenable number.

431221017 is a deficient number, since it is larger than the sum of its proper divisors (183928103).

431221017 is a wasteful number, since it uses less digits than its factorization.

431221017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124104.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 431221017 is about 20765.8618169341. The cubic root of 431221017 is about 755.4979782737.

The spelling of 431221017 in words is "four hundred thirty-one million, two hundred twenty-one thousand, seventeen".