2131493 has 16 divisors (see below), whose sum is σ = 2674560. Its totient is φ = 1653696.

The previous prime is 2131483. The next prime is 2131513. The reversal of 2131493 is 3941312.

It is a cyclic number.

It is not a de Polignac number, because 2131493 - 2⁶ = 2131429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131463) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5171 + ... + 5567.

It is an arithmetic number, because the mean of its divisors is an integer number (167160).

2^2131493 is an apocalyptic number.

It is an amenable number.

2131493 is a deficient number, since it is larger than the sum of its proper divisors (543067).

2131493 is a wasteful number, since it uses less digits than its factorization.

2131493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476.

The product of its digits is 648, while the sum is 23.

The square root of 2131493 is about 1459.9633557045. The cubic root of 2131493 is about 128.6948901668.

The spelling of 2131493 in words is "two million, one hundred thirty-one thousand, four hundred ninety-three".