1320131 has 4 divisors (see below), whose sum is σ = 1377552. Its totient is φ = 1262712.

The previous prime is 1320127. The next prime is 1320149. The reversal of 1320131 is 1310231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310231 = 13 ⋅100787.

It is a cyclic number.

It is not a de Polignac number, because 1320131 - 2² = 1320127 is a prime.

It is a super-2 number, since 2×1320131² = 3485491714322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320161) 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, 28676 + ... + 28721.

It is an arithmetic number, because the mean of its divisors is an integer number (344388).

2^1320131 is an apocalyptic number.

1320131 is a deficient number, since it is larger than the sum of its proper divisors (57421).

1320131 is an equidigital number, since it uses as much as digits as its factorization.

1320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57420.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1320131 is about 1148.9695383255. The cubic root of 1320131 is about 109.6997597653.

Adding to 1320131 its reverse (1310231), we get a palindrome (2630362).

The spelling of 1320131 in words is "one million, three hundred twenty thousand, one hundred thirty-one".