3871231611020 has 24 divisors (see below), whose sum is σ = 8159807905200. Its totient is φ = 1542736164032.

The previous prime is 3871231611011. The next prime is 3871231611029. The reversal of 3871231611020 is 201161321783.

It is an interprime number because it is at equal distance from previous prime (3871231611011) and next prime (3871231611029).

It is not an unprimeable number, because it can be changed into a prime (3871231611029) 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, 359774510 + ... + 359785269.

It is an arithmetic number, because the mean of its divisors is an integer number (339991996050).

Almost surely, 2^{3871231611020} is an apocalyptic number.

It is an amenable number.

3871231611020 is an abundant number, since it is smaller than the sum of its proper divisors (4288576294180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3871231611020 is a wasteful number, since it uses less digits than its factorization.

3871231611020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719560057 (or 719560055 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 3871231611020 in words is "three trillion, eight hundred seventy-one billion, two hundred thirty-one million, six hundred eleven thousand, twenty".