272991431 has 2 divisors, whose sum is σ = 272991432. Its totient is φ = 272991430.

The previous prime is 272991353. The next prime is 272991451. The reversal of 272991431 is 134199272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 272991431 - 2¹⁰ = 272990407 is a prime.

It is a super-2 number, since 2×272991431² = 149048642798855522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272991451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136495715 + 136495716.

It is an arithmetic number, because the mean of its divisors is an integer number (136495716).

Almost surely, 2^272991431 is an apocalyptic number.

272991431 is a deficient number, since it is larger than the sum of its proper divisors (1).

272991431 is an equidigital number, since it uses as much as digits as its factorization.

272991431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 272991431 is about 16522.4523300871. The cubic root of 272991431 is about 648.7086242473.

The spelling of 272991431 in words is "two hundred seventy-two million, nine hundred ninety-one thousand, four hundred thirty-one".