1313111125 has 16 divisors (see below), whose sum is σ = 1641045744. Its totient is φ = 1049025600.

The previous prime is 1313111029. The next prime is 1313111153. The reversal of 1313111125 is 5211113131.

It can be written as a sum of positive squares in 8 ways, for example, as 676104004 + 637007121 = 26002^2 + 25239^2 .

It is not a de Polignac number, because 1313111125 - 2¹⁵ = 1313078357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87687 + ... + 101563.

It is an arithmetic number, because the mean of its divisors is an integer number (102565359).

Almost surely, 2^1313111125 is an apocalyptic number.

It is an amenable number.

1313111125 is a deficient number, since it is larger than the sum of its proper divisors (327934619).

1313111125 is an equidigital number, since it uses as much as digits as its factorization.

1313111125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14649 (or 14639 counting only the distinct ones).

The product of its digits is 90, while the sum is 19.

The square root of 1313111125 is about 36236.8752102054. The cubic root of 1313111125 is about 1095.0496908985.

Adding to 1313111125 its reverse (5211113131), we get a palindrome (6524224256).

The spelling of 1313111125 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, one hundred twenty-five".