1161686314831 has 4 divisors (see below), whose sum is σ = 1327641502672. Its totient is φ = 995731126992.

The previous prime is 1161686314793. The next prime is 1161686314871. The reversal of 1161686314831 is 1384136861611.

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

It is not a de Polignac number, because 1161686314831 - 2⁹ = 1161686314319 is a prime.

It is a super-2 number, since 2×1161686314831² (a number of 25 digits) 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 (1161686314871) 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, 82977593910 + ... + 82977593923.

It is an arithmetic number, because the mean of its divisors is an integer number (331910375668).

Almost surely, 2^{1161686314831} is an apocalyptic number.

1161686314831 is a deficient number, since it is larger than the sum of its proper divisors (165955187841).

1161686314831 is an equidigital number, since it uses as much as digits as its factorization.

1161686314831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165955187840.

The product of its digits is 497664, while the sum is 49.

The spelling of 1161686314831 in words is "one trillion, one hundred sixty-one billion, six hundred eighty-six million, three hundred fourteen thousand, eight hundred thirty-one".