2311511042000 has 80 divisors (see below), whose sum is σ = 5708153797632. Its totient is φ = 904931945600.

The previous prime is 2311511041993. The next prime is 2311511042003. The reversal of 2311511042000 is 2401151132.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311511042003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12201272 + ... + 12389271.

Almost surely, 2^{2311511042000} is an apocalyptic number.

2311511042000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311511042000 is an abundant number, since it is smaller than the sum of its proper divisors (3396642755632).

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

2311511042000 is a wasteful number, since it uses less digits than its factorization.

2311511042000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24590613 (or 24590597 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 2311511042000 its reverse (2401151132), we get a palindrome (2313912193132).

The spelling of 2311511042000 in words is "two trillion, three hundred eleven billion, five hundred eleven million, forty-two thousand".