2311561464 has 64 divisors (see below), whose sum is σ = 5997607200. Its totient is φ = 741533184.

The previous prime is 2311561463. The next prime is 2311561543. The reversal of 2311561464 is 4641651132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311561463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215394 + ... + 225870.

Almost surely, 2^2311561464 is an apocalyptic number.

2311561464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311561464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2998803600).

2311561464 is an abundant number, since it is smaller than the sum of its proper divisors (3686045736).

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

2311561464 is a wasteful number, since it uses less digits than its factorization.

2311561464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10832 (or 10828 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 2311561464 is about 48078.7007311970. The cubic root of 2311561464 is about 1322.2141947157.

The spelling of 2311561464 in words is "two billion, three hundred eleven million, five hundred sixty-one thousand, four hundred sixty-four".