431697427 has 8 divisors (see below), whose sum is σ = 501456992. Its totient is φ = 363960000.

The previous prime is 431697421. The next prime is 431697479. The reversal of 431697427 is 724796134.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431697427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431697421) 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, 505074 + ... + 505927.

It is an arithmetic number, because the mean of its divisors is an integer number (62682124).

Almost surely, 2^431697427 is an apocalyptic number.

431697427 is a deficient number, since it is larger than the sum of its proper divisors (69759565).

431697427 is a wasteful number, since it uses less digits than its factorization.

431697427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011069.

The product of its digits is 254016, while the sum is 43.

The square root of 431697427 is about 20777.3296407407. The cubic root of 431697427 is about 755.7760988590.

The spelling of 431697427 in words is "four hundred thirty-one million, six hundred ninety-seven thousand, four hundred twenty-seven".