3129801020 has 12 divisors (see below), whose sum is σ = 6572582184. Its totient is φ = 1251920400.

The previous prime is 3129800981. The next prime is 3129801023. The reversal of 3129801020 is 201089213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129801023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78245006 + ... + 78245045.

It is an arithmetic number, because the mean of its divisors is an integer number (547715182).

Almost surely, 2^3129801020 is an apocalyptic number.

It is an amenable number.

3129801020 is an abundant number, since it is smaller than the sum of its proper divisors (3442781164).

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

3129801020 is a wasteful number, since it uses less digits than its factorization.

3129801020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156490060 (or 156490058 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 3129801020 is about 55944.6245853880. The cubic root of 3129801020 is about 1462.7571936211.

The spelling of 3129801020 in words is "three billion, one hundred twenty-nine million, eight hundred one thousand, twenty".