2631140 has 24 divisors (see below), whose sum is σ = 5556600. Its totient is φ = 1046528.

The previous prime is 2631137. The next prime is 2631143. The reversal of 2631140 is 411362.

It is an interprime number because it is at equal distance from previous prime (2631137) and next prime (2631143).

It can be written as a sum of positive squares in 4 ways, for example, as 972196 + 1658944 = 986^2 + 1288^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2631143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5636 + ... + 6084.

It is an arithmetic number, because the mean of its divisors is an integer number (231525).

2^2631140 is an apocalyptic number.

2631140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2631140 is an abundant number, since it is smaller than the sum of its proper divisors (2925460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2631140 is a wasteful number, since it uses less digits than its factorization.

2631140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2631140 is about 1622.0789130002. The cubic root of 2631140 is about 138.0536793201.

The spelling of 2631140 in words is "two million, six hundred thirty-one thousand, one hundred forty".