1301331 has 4 divisors (see below), whose sum is σ = 1735112. Its totient is φ = 867552.

The previous prime is 1301323. The next prime is 1301347. The reversal of 1301331 is 1331031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1301331 - 2³ = 1301323 is a prime.

It is a super-2 number, since 2×1301331² = 3386924743122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

1301331 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1302331) 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 in 3 ways as a sum of consecutive naturals, for example, 216886 + ... + 216891.

It is an arithmetic number, because the mean of its divisors is an integer number (433778).

2^1301331 is an apocalyptic number.

1301331 is a deficient number, since it is larger than the sum of its proper divisors (433781).

1301331 is an equidigital number, since it uses as much as digits as its factorization.

1301331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433780.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 1301331 is about 1140.7589578872. The cubic root of 1301331 is about 109.1765228817.

Adding to 1301331 its reverse (1331031), we get a palindrome (2632362).

The spelling of 1301331 in words is "one million, three hundred one thousand, three hundred thirty-one".