6131223611 has 4 divisors (see below), whose sum is σ = 6139521000. Its totient is φ = 6122926224.

The previous prime is 6131223589. The next prime is 6131223613. The reversal of 6131223611 is 1163221316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6131223611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6131223613) 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, 4147586 + ... + 4149063.

It is an arithmetic number, because the mean of its divisors is an integer number (1534880250).

Almost surely, 2^6131223611 is an apocalyptic number.

6131223611 is a deficient number, since it is larger than the sum of its proper divisors (8297389).

6131223611 is an equidigital number, since it uses as much as digits as its factorization.

6131223611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8297388.

The product of its digits is 1296, while the sum is 26.

The square root of 6131223611 is about 78302.1303094622. The cubic root of 6131223611 is about 1830.2723485091.

Adding to 6131223611 its reverse (1163221316), we get a palindrome (7294444927).

The spelling of 6131223611 in words is "six billion, one hundred thirty-one million, two hundred twenty-three thousand, six hundred eleven".