431129973 has 8 divisors (see below), whose sum is σ = 581299200. Its totient is φ = 284190368.

The previous prime is 431129953. The next prime is 431129981. The reversal of 431129973 is 379921134.

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 431129973 - 2⁸ = 431129717 is a prime.

It is a super-3 number, since 3×431129973³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431129953) 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, 807093 + ... + 807626.

It is an arithmetic number, because the mean of its divisors is an integer number (72662400).

Almost surely, 2^431129973 is an apocalyptic number.

It is an amenable number.

431129973 is a deficient number, since it is larger than the sum of its proper divisors (150169227).

431129973 is a wasteful number, since it uses less digits than its factorization.

431129973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614811.

The product of its digits is 40824, while the sum is 39.

The square root of 431129973 is about 20763.6695456270. The cubic root of 431129973 is about 755.4448049229. Note that the first 3 decimals are identical.

The spelling of 431129973 in words is "four hundred thirty-one million, one hundred twenty-nine thousand, nine hundred seventy-three".