272991631 has 4 divisors (see below), whose sum is σ = 297809064. Its totient is φ = 248174200.

The previous prime is 272991619. The next prime is 272991637. The reversal of 272991631 is 136199272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 272991631 - 2⁷ = 272991503 is a prime.

It is a super-2 number, since 2×272991631² = 149048861192080322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272991637) 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, 12408700 + ... + 12408721.

It is an arithmetic number, because the mean of its divisors is an integer number (74452266).

Almost surely, 2^272991631 is an apocalyptic number.

272991631 is a deficient number, since it is larger than the sum of its proper divisors (24817433).

272991631 is a wasteful number, since it uses less digits than its factorization.

272991631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24817432.

The product of its digits is 40824, while the sum is 40.

The square root of 272991631 is about 16522.4583824563. The cubic root of 272991631 is about 648.7087826670.

The spelling of 272991631 in words is "two hundred seventy-two million, nine hundred ninety-one thousand, six hundred thirty-one".