1513111013 has 4 divisors (see below), whose sum is σ = 1514950368. Its totient is φ = 1511271660.

The previous prime is 1513111003. The next prime is 1513111021. The reversal of 1513111013 is 3101113151.

It is a happy number.

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 1513111013 - 2²² = 1508916709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1513110982 and 1513111000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513111003) 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, 918443 + ... + 920088.

It is an arithmetic number, because the mean of its divisors is an integer number (378737592).

Almost surely, 2^1513111013 is an apocalyptic number.

It is an amenable number.

1513111013 is a deficient number, since it is larger than the sum of its proper divisors (1839355).

1513111013 is an equidigital number, since it uses as much as digits as its factorization.

1513111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839354.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 1513111013 is about 38898.7276527138. The cubic root of 1513111013 is about 1148.0397640380.

Adding to 1513111013 its reverse (3101113151), we get a palindrome (4614224164).

The spelling of 1513111013 in words is "one billion, five hundred thirteen million, one hundred eleven thousand, thirteen".