2001232231087 has 2 divisors, whose sum is σ = 2001232231088. Its totient is φ = 2001232231086.

The previous prime is 2001232231079. The next prime is 2001232231121. The reversal of 2001232231087 is 7801322321002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001232231087 - 2³ = 2001232231079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001232231487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000616115543 + 1000616115544.

It is an arithmetic number, because the mean of its divisors is an integer number (1000616115544).

Almost surely, 2^{2001232231087} is an apocalyptic number.

2001232231087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001232231087 is an equidigital number, since it uses as much as digits as its factorization.

2001232231087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 2001232231087 its reverse (7801322321002), we get a palindrome (9802554552089).

The spelling of 2001232231087 in words is "two trillion, one billion, two hundred thirty-two million, two hundred thirty-one thousand, eighty-seven".