431427273 has 4 divisors (see below), whose sum is σ = 575236368. Its totient is φ = 287618180.

The previous prime is 431427263. The next prime is 431427301. The reversal of 431427273 is 372724134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431427273 - 2¹⁶ = 431361737 is a prime.

It is a super-2 number, since 2×431427273² = 372258983776433058, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (431427203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71904543 + ... + 71904548.

It is an arithmetic number, because the mean of its divisors is an integer number (143809092).

Almost surely, 2^431427273 is an apocalyptic number.

It is an amenable number.

431427273 is a deficient number, since it is larger than the sum of its proper divisors (143809095).

431427273 is a wasteful number, since it uses less digits than its factorization.

431427273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143809094.

The product of its digits is 28224, while the sum is 33.

The square root of 431427273 is about 20770.8274510189. The cubic root of 431427273 is about 755.6184123800.

The spelling of 431427273 in words is "four hundred thirty-one million, four hundred twenty-seven thousand, two hundred seventy-three".