1513125311 has 8 divisors (see below), whose sum is σ = 1594245120. Its totient is φ = 1433283192.

The previous prime is 1513125293. The next prime is 1513125343. The reversal of 1513125311 is 1135213151.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1513125311 is a prime.

It is a super-3 number, since 3×1513125311³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513122311) 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, 316991 + ... + 321728.

It is an arithmetic number, because the mean of its divisors is an integer number (199280640).

Almost surely, 2^1513125311 is an apocalyptic number.

1513125311 is a deficient number, since it is larger than the sum of its proper divisors (81119809).

1513125311 is a wasteful number, since it uses less digits than its factorization.

1513125311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638845.

The product of its digits is 450, while the sum is 23.

The square root of 1513125311 is about 38898.9114372112. The cubic root of 1513125311 is about 1148.0433801245.

Adding to 1513125311 its reverse (1135213151), we get a palindrome (2648338462).

The spelling of 1513125311 in words is "one billion, five hundred thirteen million, one hundred twenty-five thousand, three hundred eleven".