2311591992 has 16 divisors (see below), whose sum is σ = 5778980040. Its totient is φ = 770530656.

The previous prime is 2311591969. The next prime is 2311591993. The reversal of 2311591992 is 2991951132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311591993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48158143 + ... + 48158190.

Almost surely, 2^2311591992 is an apocalyptic number.

It is an amenable number.

2311591992 is an abundant number, since it is smaller than the sum of its proper divisors (3467388048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2311591992 is a wasteful number, since it uses less digits than its factorization.

2311591992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96316342 (or 96316338 counting only the distinct ones).

The product of its digits is 43740, while the sum is 42.

The square root of 2311591992 is about 48079.0182096099. The cubic root of 2311591992 is about 1322.2200153666.

The spelling of 2311591992 in words is "two billion, three hundred eleven million, five hundred ninety-one thousand, nine hundred ninety-two".