272431021 has 4 divisors (see below), whose sum is σ = 284275872. Its totient is φ = 260586172.

The previous prime is 272431013. The next prime is 272431057. The reversal of 272431021 is 120134272.

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 272431021 - 2³ = 272431013 is a prime.

It is a super-2 number, since 2×272431021² = 148437322406204882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 272430983 and 272431001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272431121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5922391 + ... + 5922436.

It is an arithmetic number, because the mean of its divisors is an integer number (71068968).

Almost surely, 2^272431021 is an apocalyptic number.

It is an amenable number.

272431021 is a deficient number, since it is larger than the sum of its proper divisors (11844851).

272431021 is a wasteful number, since it uses less digits than its factorization.

272431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11844850.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 272431021 is about 16505.4845733168. The cubic root of 272431021 is about 648.2644200111.

Adding to 272431021 its reverse (120134272), we get a palindrome (392565293).

The spelling of 272431021 in words is "two hundred seventy-two million, four hundred thirty-one thousand, twenty-one".