2131508 has 18 divisors (see below), whose sum is σ = 3835398. Its totient is φ = 1036480.

The previous prime is 2131483. The next prime is 2131513. The reversal of 2131508 is 8051312.

It can be written as a sum of positive squares in 3 ways, for example, as 394384 + 1737124 = 628^2 + 1318^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2131508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6566 + ... + 6882.

2^2131508 is an apocalyptic number.

It is an amenable number.

2131508 is a deficient number, since it is larger than the sum of its proper divisors (1703890).

2131508 is a wasteful number, since it uses less digits than its factorization.

2131508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2131508 is about 1459.9684928107. The cubic root of 2131508 is about 128.6951920551.

The spelling of 2131508 in words is "two million, one hundred thirty-one thousand, five hundred eight".