613111311 has 12 divisors (see below), whose sum is σ = 894204688. Its totient is φ = 404771904.

The previous prime is 613111283. The next prime is 613111319. The reversal of 613111311 is 113111316.

It is not a de Polignac number, because 613111311 - 2¹³ = 613103119 is a prime.

It is a super-2 number, since 2×613111311² = 751810959352277442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613111319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329770 + ... + 331623.

Almost surely, 2^613111311 is an apocalyptic number.

613111311 is a deficient number, since it is larger than the sum of its proper divisors (281093377).

613111311 is a wasteful number, since it uses less digits than its factorization.

613111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661502 (or 661499 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

The square root of 613111311 is about 24761.0846087162. The cubic root of 613111311 is about 849.5320658586.

Adding to 613111311 its reverse (113111316), we get a palindrome (726222627).

The spelling of 613111311 in words is "six hundred thirteen million, one hundred eleven thousand, three hundred eleven".