1613040311 has 4 divisors (see below), whose sum is σ = 1613121672. Its totient is φ = 1612958952.

The previous prime is 1613040269. The next prime is 1613040313. The reversal of 1613040311 is 1130403161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1613040311 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 (1613040313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10640 + ... + 57786.

It is an arithmetic number, because the mean of its divisors is an integer number (403280418).

Almost surely, 2^1613040311 is an apocalyptic number.

1613040311 is a deficient number, since it is larger than the sum of its proper divisors (81361).

1613040311 is an equidigital number, since it uses as much as digits as its factorization.

1613040311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81360.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1613040311 is about 40162.6731057583. The cubic root of 1613040311 is about 1172.7760101134.

Adding to 1613040311 its reverse (1130403161), we get a palindrome (2743443472).

The spelling of 1613040311 in words is "one billion, six hundred thirteen million, forty thousand, three hundred eleven".