2011313987 has 2 divisors, whose sum is σ = 2011313988. Its totient is φ = 2011313986.

The previous prime is 2011313977. The next prime is 2011314001. The reversal of 2011313987 is 7893131102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011313987 - 2⁴ = 2011313971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011313947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005656993 + 1005656994.

It is an arithmetic number, because the mean of its divisors is an integer number (1005656994).

Almost surely, 2^2011313987 is an apocalyptic number.

2011313987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011313987 is an equidigital number, since it uses as much as digits as its factorization.

2011313987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2011313987 is about 44847.6753801131. The cubic root of 2011313987 is about 1262.2923723782.

The spelling of 2011313987 in words is "two billion, eleven million, three hundred thirteen thousand, nine hundred eighty-seven".