2631431 has 16 divisors (see below), whose sum is σ = 3036960. Its totient is φ = 2257920.

The previous prime is 2631427. The next prime is 2631437. The reversal of 2631431 is 1341362.

It is a cyclic number.

It is not a de Polignac number, because 2631431 - 2² = 2631427 is a prime.

It is a super-2 number, since 2×2631431² = 13848858215522, 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 (2631437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23231 + ... + 23343.

It is an arithmetic number, because the mean of its divisors is an integer number (189810).

2^2631431 is an apocalyptic number.

2631431 is a deficient number, since it is larger than the sum of its proper divisors (405529).

2631431 is a wasteful number, since it uses less digits than its factorization.

2631431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its digits is 432, while the sum is 20.

The square root of 2631431 is about 1622.1686102252. The cubic root of 2631431 is about 138.0587686400.

Adding to 2631431 its reverse (1341362), we get a palindrome (3972793).

The spelling of 2631431 in words is "two million, six hundred thirty-one thousand, four hundred thirty-one".