2231305956 has 36 divisors (see below), whose sum is σ = 6152996304. Its totient is φ = 676153200.

The previous prime is 2231305933. The next prime is 2231305957. The reversal of 2231305956 is 6595031322.

2231305956 is a `hidden beast` number, since 2 + 2 + 31 + 30 + 595 + 6 = 666.

2231305956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×2231305956³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2231305956.

It is not an unprimeable number, because it can be changed into a prime (2231305957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2816910 + ... + 2817701.

It is an arithmetic number, because the mean of its divisors is an integer number (170916564).

Almost surely, 2^2231305956 is an apocalyptic number.

It is an amenable number.

2231305956 is an abundant number, since it is smaller than the sum of its proper divisors (3921690348).

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

2231305956 is a wasteful number, since it uses less digits than its factorization.

2231305956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634632 (or 5634627 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 2231305956 is about 47236.7013666280. The cubic root of 2231305956 is about 1306.7315439061.

The spelling of 2231305956 in words is "two billion, two hundred thirty-one million, three hundred five thousand, nine hundred fifty-six".