1313403 has 32 divisors (see below), whose sum is σ = 2290176. Its totient is φ = 649728.

The previous prime is 1313383. The next prime is 1313423. The reversal of 1313403 is 3043131.

It is an interprime number because it is at equal distance from previous prime (1313383) and next prime (1313423).

It is not a de Polignac number, because 1313403 - 2⁵ = 1313371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4500 + ... + 4782.

It is an arithmetic number, because the mean of its divisors is an integer number (71568).

2^1313403 is an apocalyptic number.

1313403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1313403 is a deficient number, since it is larger than the sum of its proper divisors (976773).

1313403 is a wasteful number, since it uses less digits than its factorization.

1313403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1313403 is about 1146.0379574866. The cubic root of 1313403 is about 109.5130819841.

Adding to 1313403 its reverse (3043131), we get a palindrome (4356534).

The spelling of 1313403 in words is "one million, three hundred thirteen thousand, four hundred three".