1511113313 has 4 divisors (see below), whose sum is σ = 1514524848. Its totient is φ = 1507701780.

The previous prime is 1511113297. The next prime is 1511113327. The reversal of 1511113313 is 3133111151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1511113313 - 2⁴ = 1511113297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1511113333) 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, 1705103 + ... + 1705988.

It is an arithmetic number, because the mean of its divisors is an integer number (378631212).

Almost surely, 2^1511113313 is an apocalyptic number.

It is an amenable number.

1511113313 is a deficient number, since it is larger than the sum of its proper divisors (3411535).

1511113313 is an equidigital number, since it uses as much as digits as its factorization.

1511113313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411534.

The product of its digits is 135, while the sum is 20.

The square root of 1511113313 is about 38873.0409538539. The cubic root of 1511113313 is about 1147.5343045201.

Adding to 1511113313 its reverse (3133111151), we get a palindrome (4644224464).

The spelling of 1511113313 in words is "one billion, five hundred eleven million, one hundred thirteen thousand, three hundred thirteen".