61131834311 has 4 divisors (see below), whose sum is σ = 61219041624. Its totient is φ = 61044627000.

The previous prime is 61131834271. The next prime is 61131834331. The reversal of 61131834311 is 11343813116.

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

It is a cyclic number.

It is not a de Polignac number, because 61131834311 - 2³⁰ = 60058092487 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 (61131834331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43602605 + ... + 43604006.

It is an arithmetic number, because the mean of its divisors is an integer number (15304760406).

Almost surely, 2^61131834311 is an apocalyptic number.

61131834311 is a deficient number, since it is larger than the sum of its proper divisors (87207313).

61131834311 is an equidigital number, since it uses as much as digits as its factorization.

61131834311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87207312.

The product of its digits is 5184, while the sum is 32.

The spelling of 61131834311 in words is "sixty-one billion, one hundred thirty-one million, eight hundred thirty-four thousand, three hundred eleven".