1881031 has 2 divisors, whose sum is σ = 1881032. Its totient is φ = 1881030.

The previous prime is 1880993. The next prime is 1881037. The reversal of 1881031 is 1301881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1881031 - 2⁷ = 1880903 is a prime.

It is a super-2 number, since 2×1881031² = 7076555245922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1880993 and 1881011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1881037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940515 + 940516.

It is an arithmetic number, because the mean of its divisors is an integer number (940516).

2^1881031 is an apocalyptic number.

1881031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881031 is an equidigital number, since it uses as much as digits as its factorization.

1881031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1881031 is about 1371.5068355644. The cubic root of 1881031 is about 123.4426731048.

The spelling of 1881031 in words is "one million, eight hundred eighty-one thousand, thirty-one".