2231544487 has 2 divisors, whose sum is σ = 2231544488. Its totient is φ = 2231544486.

The previous prime is 2231544451. The next prime is 2231544529. The reversal of 2231544487 is 7844451322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2231544487 - 2³¹ = 84060839 is a prime.

It is a super-3 number, since 3×2231544487³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231544587) 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 as a sum of consecutive naturals, namely, 1115772243 + 1115772244.

It is an arithmetic number, because the mean of its divisors is an integer number (1115772244).

Almost surely, 2^2231544487 is an apocalyptic number.

2231544487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231544487 is an equidigital number, since it uses as much as digits as its factorization.

2231544487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 40.

The square root of 2231544487 is about 47239.2261473450. The cubic root of 2231544487 is about 1306.7781063052.

The spelling of 2231544487 in words is "two billion, two hundred thirty-one million, five hundred forty-four thousand, four hundred eighty-seven".