2631345 has 24 divisors (see below), whose sum is σ = 4479744. Its totient is φ = 1318656.

The previous prime is 2631337. The next prime is 2631347. The reversal of 2631345 is 5431362.

It is a happy number.

It is not a de Polignac number, because 2631345 - 2³ = 2631337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2631347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4032 + ... + 4638.

It is an arithmetic number, because the mean of its divisors is an integer number (186656).

2^2631345 is an apocalyptic number.

It is an amenable number.

2631345 is a deficient number, since it is larger than the sum of its proper divisors (1848399).

2631345 is a wasteful number, since it uses less digits than its factorization.

2631345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 632 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 2631345 is about 1622.1421022833. The cubic root of 2631345 is about 138.0572646189.

The spelling of 2631345 in words is "two million, six hundred thirty-one thousand, three hundred forty-five".