1321371 has 6 divisors (see below), whose sum is σ = 1908660. Its totient is φ = 880908.

The previous prime is 1321363. The next prime is 1321379. The reversal of 1321371 is 1731231.

It is an interprime number because it is at equal distance from previous prime (1321363) and next prime (1321379).

It is not a de Polignac number, because 1321371 - 2³ = 1321363 is a prime.

1321371 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1321379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73401 + ... + 73418.

It is an arithmetic number, because the mean of its divisors is an integer number (318110).

2^1321371 is an apocalyptic number.

1321371 is a deficient number, since it is larger than the sum of its proper divisors (587289).

1321371 is a wasteful number, since it uses less digits than its factorization.

1321371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146825 (or 146822 counting only the distinct ones).

The product of its digits is 126, while the sum is 18.

The square root of 1321371 is about 1149.5090256279. The cubic root of 1321371 is about 109.7340960380.

The spelling of 1321371 in words is "one million, three hundred twenty-one thousand, three hundred seventy-one".