20313020987 has 8 divisors (see below), whose sum is σ = 23300547072. Its totient is φ = 17346911400.

The previous prime is 20313020951. The next prime is 20313021031. The reversal of 20313020987 is 78902031302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20313020987 - 2¹² = 20313016891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313020927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5352089 + ... + 5355882.

It is an arithmetic number, because the mean of its divisors is an integer number (2912568384).

Almost surely, 2^20313020987 is an apocalyptic number.

20313020987 is a deficient number, since it is larger than the sum of its proper divisors (2987526085).

20313020987 is a wasteful number, since it uses less digits than its factorization.

20313020987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10708249.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 20313020987 in words is "twenty billion, three hundred thirteen million, twenty thousand, nine hundred eighty-seven".