20131842587 has 8 divisors (see below), whose sum is σ = 20965165440. Its totient is φ = 19310014080.

The previous prime is 20131842557. The next prime is 20131842613. The reversal of 20131842587 is 78524813102.

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

It is not a de Polignac number, because 20131842587 - 2²⁴ = 20115065371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131842557) 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, 2870012 + ... + 2877017.

It is an arithmetic number, because the mean of its divisors is an integer number (2620645680).

Almost surely, 2^20131842587 is an apocalyptic number.

20131842587 is a deficient number, since it is larger than the sum of its proper divisors (833322853).

20131842587 is a wasteful number, since it uses less digits than its factorization.

20131842587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747173.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 20131842587 in words is "twenty billion, one hundred thirty-one million, eight hundred forty-two thousand, five hundred eighty-seven".