2231564580 has 240 divisors, whose sum is σ = 8039154816. Its totient is φ = 507617280.

The previous prime is 2231564579. The next prime is 2231564603. The reversal of 2231564580 is 854651322.

2231564580 is a `hidden beast` number, since 2 + 2 + 3 + 1 + 5 + 645 + 8 + 0 = 666.

It is a super-3 number, since 3×2231564580³ (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 an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3481060 + ... + 3481700.

Almost surely, 2^2231564580 is an apocalyptic number.

2231564580 is a gapful number since it is divisible by the number (20) 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 2231564580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4019577408).

2231564580 is an abundant number, since it is smaller than the sum of its proper divisors (5807590236).

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

2231564580 is a wasteful number, since it uses less digits than its factorization.

2231564580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2231564580 is about 47239.4388196981. The cubic root of 2231564580 is about 1306.7820284040.

The spelling of 2231564580 in words is "two billion, two hundred thirty-one million, five hundred sixty-four thousand, five hundred eighty".