2131994 has 16 divisors (see below), whose sum is σ = 3338496. Its totient is φ = 1020000.

The previous prime is 2131991. The next prime is 2132003. The reversal of 2131994 is 4991312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2131991) 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, 8369 + ... + 8619.

It is an arithmetic number, because the mean of its divisors is an integer number (208656).

2^2131994 is an apocalyptic number.

2131994 is a deficient number, since it is larger than the sum of its proper divisors (1206502).

2131994 is a wasteful number, since it uses less digits than its factorization.

2131994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 1944, while the sum is 29.

The square root of 2131994 is about 1460.1349252723. The cubic root of 2131994 is about 128.7049724720.

It can be divided in two parts, 2131 and 994, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2131994 in words is "two million, one hundred thirty-one thousand, nine hundred ninety-four".