1980031 has 2 divisors, whose sum is σ = 1980032. Its totient is φ = 1980030.

The previous prime is 1980029. The next prime is 1980053. The reversal of 1980031 is 1300891.

It is an a-pointer prime, because the next prime (1980053) can be obtained adding 1980031 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1980031 - 2¹ = 1980029 is a prime.

It is a super-2 number, since 2×1980031² = 7841045521922, which contains 22 as substring.

Together with 1980029, it forms a pair of twin primes.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1979984 and 1980011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1980431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990015 + 990016.

It is an arithmetic number, because the mean of its divisors is an integer number (990016).

2^1980031 is an apocalyptic number.

1980031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980031 is an equidigital number, since it uses as much as digits as its factorization.

1980031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1980031 is about 1407.1357432743. The cubic root of 1980031 is about 125.5713788964.

The spelling of 1980031 in words is "one million, nine hundred eighty thousand, thirty-one".