2231542487 has 2 divisors, whose sum is σ = 2231542488. Its totient is φ = 2231542486.

The previous prime is 2231542433. The next prime is 2231542499. The reversal of 2231542487 is 7842451322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231542487 - 2⁸ = 2231542231 is a prime.

It is a super-3 number, since 3×2231542487³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2231542487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231544487) 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, 1115771243 + 1115771244.

It is an arithmetic number, because the mean of its divisors is an integer number (1115771244).

Almost surely, 2^2231542487 is an apocalyptic number.

2231542487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231542487 is an equidigital number, since it uses as much as digits as its factorization.

2231542487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 38.

The square root of 2231542487 is about 47239.2049784922. The cubic root of 2231542487 is about 1306.7777159094. Note that the first 4 decimals are identical.

The spelling of 2231542487 in words is "two billion, two hundred thirty-one million, five hundred forty-two thousand, four hundred eighty-seven".