2631951 has 12 divisors (see below), whose sum is σ = 4344912. Its totient is φ = 1503936.

The previous prime is 2631949. The next prime is 2631971. The reversal of 2631951 is 1591362.

It is not a de Polignac number, because 2631951 - 2¹ = 2631949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631971) 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, 20826 + ... + 20951.

It is an arithmetic number, because the mean of its divisors is an integer number (362076).

2^2631951 is an apocalyptic number.

2631951 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2631951 is a deficient number, since it is larger than the sum of its proper divisors (1712961).

2631951 is a wasteful number, since it uses less digits than its factorization.

2631951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41790 (or 41787 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 2631951 is about 1622.3288815773. The cubic root of 2631951 is about 138.0678620232.

The spelling of 2631951 in words is "two million, six hundred thirty-one thousand, nine hundred fifty-one".