2791431 has 12 divisors (see below), whose sum is σ = 4126408. Its totient is φ = 1817424.

The previous prime is 2791429. The next prime is 2791463. The reversal of 2791431 is 1341972.

It is not a de Polignac number, because 2791431 - 2¹ = 2791429 is a prime.

It is a super-2 number, since 2×2791431² = 15584174055522, 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 = 2791395 and 2791404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3220 + ... + 3993.

2^2791431 is an apocalyptic number.

2791431 is a deficient number, since it is larger than the sum of its proper divisors (1334977).

2791431 is a wasteful number, since it uses less digits than its factorization.

2791431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262 (or 7259 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2791431 is about 1670.7576125818. The cubic root of 2791431 is about 140.8020460436.

The spelling of 2791431 in words is "two million, seven hundred ninety-one thousand, four hundred thirty-one".