431434729 has 16 divisors (see below), whose sum is σ = 496500480. Its totient is φ = 370766160.

The previous prime is 431434699. The next prime is 431434741. The reversal of 431434729 is 927434134.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431434729 is a prime.

It is a super-2 number, since 2×431434729² = 372271850774606882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431434229) 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, 107334 + ... + 111280.

It is an arithmetic number, because the mean of its divisors is an integer number (31031280).

Almost surely, 2^431434729 is an apocalyptic number.

It is an amenable number.

431434729 is a deficient number, since it is larger than the sum of its proper divisors (65065751).

431434729 is a wasteful number, since it uses less digits than its factorization.

431434729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500.

The product of its digits is 72576, while the sum is 37.

The square root of 431434729 is about 20771.0069327416. The cubic root of 431434729 is about 755.6227652639.

The spelling of 431434729 in words is "four hundred thirty-one million, four hundred thirty-four thousand, seven hundred twenty-nine".