2531730 has 16 divisors (see below), whose sum is σ = 6076224. Its totient is φ = 675120.

The previous prime is 2531717. The next prime is 2531741. The reversal of 2531730 is 371352.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2531697 and 2531706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42166 + ... + 42225.

It is an arithmetic number, because the mean of its divisors is an integer number (379764).

2^2531730 is an apocalyptic number.

2531730 is an abundant number, since it is smaller than the sum of its proper divisors (3544494).

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

2531730 is a wasteful number, since it uses less digits than its factorization.

2531730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84401.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 2531730 is about 1591.1410999657. The cubic root of 2531730 is about 136.2926584156.

The spelling of 2531730 in words is "two million, five hundred thirty-one thousand, seven hundred thirty".