1313220403 has 8 divisors (see below), whose sum is σ = 1516875120. Its totient is φ = 1123610880.

The previous prime is 1313220371. The next prime is 1313220409. The reversal of 1313220403 is 3040223131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313220403 - 2⁵ = 1313220371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313220409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3511098 + ... + 3511471.

It is an arithmetic number, because the mean of its divisors is an integer number (189609390).

Almost surely, 2^1313220403 is an apocalyptic number.

1313220403 is a deficient number, since it is larger than the sum of its proper divisors (203654717).

1313220403 is a wasteful number, since it uses less digits than its factorization.

1313220403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022597.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1313220403 is about 36238.3830075239. The cubic root of 1313220403 is about 1095.0800669823.

Adding to 1313220403 its reverse (3040223131), we get a palindrome (4353443534).

The spelling of 1313220403 in words is "one billion, three hundred thirteen million, two hundred twenty thousand, four hundred three".