2311332012 has 72 divisors (see below), whose sum is σ = 6463521792. Its totient is φ = 690530400.

The previous prime is 2311332011. The next prime is 2311332097. The reversal of 2311332012 is 2102331132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2311332011) 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 23 ways as a sum of consecutive naturals, for example, 12988 + ... + 69219.

It is an arithmetic number, because the mean of its divisors is an integer number (89771136).

Almost surely, 2^2311332012 is an apocalyptic number.

2311332012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2311332012 is an abundant number, since it is smaller than the sum of its proper divisors (4152189780).

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

2311332012 is a wasteful number, since it uses less digits than its factorization.

2311332012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82299 (or 82294 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2311332012 is about 48076.3144594092. The cubic root of 2311332012 is about 1322.1704443858.

Adding to 2311332012 its reverse (2102331132), we get a palindrome (4413663144).

The spelling of 2311332012 in words is "two billion, three hundred eleven million, three hundred thirty-two thousand, twelve".