1992131 has 4 divisors (see below), whose sum is σ = 2097000. Its totient is φ = 1887264.

The previous prime is 1992119. The next prime is 1992139. The reversal of 1992131 is 1312991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312991 = 157 ⋅8363.

It is a cyclic number.

It is not a de Polignac number, because 1992131 - 2¹⁰ = 1991107 is a prime.

It is a super-2 number, since 2×1992131² = 7937171842322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1992131.

It is not an unprimeable number, because it can be changed into a prime (1992139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52406 + ... + 52443.

It is an arithmetic number, because the mean of its divisors is an integer number (524250).

2^1992131 is an apocalyptic number.

1992131 is a deficient number, since it is larger than the sum of its proper divisors (104869).

1992131 is a wasteful number, since it uses less digits than its factorization.

1992131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104868.

The product of its digits is 486, while the sum is 26.

The square root of 1992131 is about 1411.4287087912. The cubic root of 1992131 is about 125.8266491584.

The spelling of 1992131 in words is "one million, nine hundred ninety-two thousand, one hundred thirty-one".