220131032987 has 2 divisors, whose sum is σ = 220131032988. Its totient is φ = 220131032986.

The previous prime is 220131032969. The next prime is 220131033013. The reversal of 220131032987 is 789230131022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220131032987 - 2¹⁶ = 220130967451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220131032987.

It is not a weakly prime, because it can be changed into another prime (220131032587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110065516493 + 110065516494.

It is an arithmetic number, because the mean of its divisors is an integer number (110065516494).

Almost surely, 2^220131032987 is an apocalyptic number.

220131032987 is a deficient number, since it is larger than the sum of its proper divisors (1).

220131032987 is an equidigital number, since it uses as much as digits as its factorization.

220131032987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 220131032987 in words is "two hundred twenty billion, one hundred thirty-one million, thirty-two thousand, nine hundred eighty-seven".