2231561366 has 16 divisors (see below), whose sum is σ = 3487110480. Its totient is φ = 1070113920.

The previous prime is 2231561303. The next prime is 2231561369. The reversal of 2231561366 is 6631651322.

It is a super-3 number, since 3×2231561366³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231561369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225791 + ... + 235466.

It is an arithmetic number, because the mean of its divisors is an integer number (217944405).

Almost surely, 2^2231561366 is an apocalyptic number.

2231561366 is a deficient number, since it is larger than the sum of its proper divisors (1255549114).

2231561366 is a wasteful number, since it uses less digits than its factorization.

2231561366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461359.

The product of its digits is 38880, while the sum is 35.

The square root of 2231561366 is about 47239.4048015002. The cubic root of 2231561366 is about 1306.7814010416.

The spelling of 2231561366 in words is "two billion, two hundred thirty-one million, five hundred sixty-one thousand, three hundred sixty-six".