431020109 has 8 divisors (see below), whose sum is σ = 466223520. Its totient is φ = 396109296.

The previous prime is 431020087. The next prime is 431020123. The reversal of 431020109 is 901020134.

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-431020109 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 (431020189) 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, 70079 + ... + 75980.

It is an arithmetic number, because the mean of its divisors is an integer number (58277940).

Almost surely, 2^431020109 is an apocalyptic number.

It is an amenable number.

431020109 is a deficient number, since it is larger than the sum of its proper divisors (35203411).

431020109 is a wasteful number, since it uses less digits than its factorization.

431020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146299.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 431020109 is about 20761.0237946013. The cubic root of 431020109 is about 755.3806299686.

The spelling of 431020109 in words is "four hundred thirty-one million, twenty thousand, one hundred nine".