1313720 has 16 divisors (see below), whose sum is σ = 2955960. Its totient is φ = 525472.

The previous prime is 1313701. The next prime is 1313723. The reversal of 1313720 is 273131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313723) 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, 16382 + ... + 16461.

2^1313720 is an apocalyptic number.

1313720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313720 is an abundant number, since it is smaller than the sum of its proper divisors (1642240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313720 is a wasteful number, since it uses less digits than its factorization.

1313720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32854 (or 32850 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1313720 is about 1146.1762517170. The cubic root of 1313720 is about 109.5218918859.

Adding to 1313720 its reverse (273131), we get a palindrome (1586851).

The spelling of 1313720 in words is "one million, three hundred thirteen thousand, seven hundred twenty".