1231882 has 4 divisors (see below), whose sum is σ = 1847826. Its totient is φ = 615940.

The previous prime is 1231877. The next prime is 1231883. The reversal of 1231882 is 2881321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2881321 = 199 ⋅14479.

It can be written as a sum of positive squares in only one way, i.e., 1062961 + 168921 = 1031^2 + 411^2 .

It is not an unprimeable number, because it can be changed into a prime (1231883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307969 + ... + 307972.

2^1231882 is an apocalyptic number.

1231882 is a deficient number, since it is larger than the sum of its proper divisors (615944).

1231882 is an equidigital number, since it uses as much as digits as its factorization.

1231882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615943.

The product of its digits is 768, while the sum is 25.

The square root of 1231882 is about 1109.9017974578. The cubic root of 1231882 is about 107.1987455300.

The spelling of 1231882 in words is "one million, two hundred thirty-one thousand, eight hundred eighty-two".