2231094528 has 108 divisors (see below), whose sum is σ = 6927718980. Its totient is φ = 686481408.

The previous prime is 2231094527. The next prime is 2231094533. The reversal of 2231094528 is 8254901322.

It is a happy number.

2231094528 is a `hidden beast` number, since 2 + 23 + 109 + 4 + 528 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 868598784 + 1362495744 = 29472^2 + 36912^2 .

It is a super-3 number, since 3×2231094528³ (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 junction number, because it is equal to n+sod(n) for n = 2231094492 and 2231094501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231094527) 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, 7293 + ... + 67196.

Almost surely, 2^2231094528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231094528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3463859490).

2231094528 is an abundant number, since it is smaller than the sum of its proper divisors (4696624452).

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

2231094528 is a wasteful number, since it uses less digits than its factorization.

2231094528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74524 (or 74507 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2231094528 is about 47234.4633503970. The cubic root of 2231094528 is about 1306.6902693686.

The spelling of 2231094528 in words is "two billion, two hundred thirty-one million, ninety-four thousand, five hundred twenty-eight".