431413921 has 8 divisors (see below), whose sum is σ = 451221120. Its totient is φ = 411694272.

The previous prime is 431413919. The next prime is 431413933. The reversal of 431413921 is 129314134.

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

It is a cyclic number.

It is not a de Polignac number, because 431413921 - 2¹ = 431413919 is a prime.

It is a super-2 number, since 2×431413921² = 372235942465188482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431413921.

It is not an unprimeable number, because it can be changed into a prime (431413901) 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, 11701 + ... + 31618.

It is an arithmetic number, because the mean of its divisors is an integer number (56402640).

Almost surely, 2^431413921 is an apocalyptic number.

It is an amenable number.

431413921 is a deficient number, since it is larger than the sum of its proper divisors (19807199).

431413921 is a wasteful number, since it uses less digits than its factorization.

431413921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43775.

The product of its digits is 2592, while the sum is 28.

The square root of 431413921 is about 20770.5060362043. The cubic root of 431413921 is about 755.6106172299.

The spelling of 431413921 in words is "four hundred thirty-one million, four hundred thirteen thousand, nine hundred twenty-one".