1313131103 has 4 divisors (see below), whose sum is σ = 1313363040. Its totient is φ = 1312899168.

The previous prime is 1313131087. The next prime is 1313131109. The reversal of 1313131103 is 3011313131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313131103 - 2⁴ = 1313131087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313131109) 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, 107258 + ... + 118871.

It is an arithmetic number, because the mean of its divisors is an integer number (328340760).

Almost surely, 2^1313131103 is an apocalyptic number.

1313131103 is a deficient number, since it is larger than the sum of its proper divisors (231937).

1313131103 is an equidigital number, since it uses as much as digits as its factorization.

1313131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231936.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1313131103 is about 36237.1508675834. The cubic root of 1313131103 is about 1095.0552443233.

Adding to 1313131103 its reverse (3011313131), we get a palindrome (4324444234).

The spelling of 1313131103 in words is "one billion, three hundred thirteen million, one hundred thirty-one thousand, one hundred three".