431430273 has 8 divisors (see below), whose sum is σ = 639156000. Its totient is φ = 287620164.

The previous prime is 431430257. The next prime is 431430277. The reversal of 431430273 is 372034134.

It is not a de Polignac number, because 431430273 - 2⁴ = 431430257 is a prime.

It is a super-2 number, since 2×431430273² = 372264160921709058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15978899 = 431430273 / (4 + 3 + 1 + 4 + 3 + 0 + 2 + 7 + 3).

It is not an unprimeable number, because it can be changed into a prime (431430277) 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, 7989423 + ... + 7989476.

It is an arithmetic number, because the mean of its divisors is an integer number (79894500).

Almost surely, 2^431430273 is an apocalyptic number.

It is an amenable number.

431430273 is a deficient number, since it is larger than the sum of its proper divisors (207725727).

431430273 is a wasteful number, since it uses less digits than its factorization.

431430273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15978908 (or 15978902 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 431430273 is about 20770.8996675638. The cubic root of 431430273 is about 755.6201638146.

The spelling of 431430273 in words is "four hundred thirty-one million, four hundred thirty thousand, two hundred seventy-three".