1320031 has 2 divisors, whose sum is σ = 1320032. Its totient is φ = 1320030.

The previous prime is 1320023. The next prime is 1320037. The reversal of 1320031 is 1300231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320031 - 2³ = 1320023 is a prime.

It is a super-2 number, since 2×1320031² = 3484963681922, which contains 22 as substring.

1320031 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660015 + 660016.

It is an arithmetic number, because the mean of its divisors is an integer number (660016).

2^1320031 is an apocalyptic number.

1320031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320031 is an equidigital number, since it uses as much as digits as its factorization.

1320031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1320031 is about 1148.9260202467. The cubic root of 1320031 is about 109.6969897743.

Adding to 1320031 its reverse (1300231), we get a palindrome (2620262).

It can be divided in two parts, 13200 and 31, that added together give a palindrome (13231).

The spelling of 1320031 in words is "one million, three hundred twenty thousand, thirty-one".