1313571 has 16 divisors (see below), whose sum is σ = 2032128. Its totient is φ = 739200.

The previous prime is 1313569. The next prime is 1313579. The reversal of 1313571 is 1753131.

It is not a de Polignac number, because 1313571 - 2¹ = 1313569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1313579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

2^1313571 is an apocalyptic number.

1313571 is a deficient number, since it is larger than the sum of its proper divisors (718557).

1313571 is an equidigital number, since it uses as much as digits as its factorization.

1313571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its digits is 315, while the sum is 21.

The square root of 1313571 is about 1146.1112511445. Note that the first 3 decimals coincide. The cubic root of 1313571 is about 109.5177511307.

The spelling of 1313571 in words is "one million, three hundred thirteen thousand, five hundred seventy-one".