3121000001000 has 64 divisors (see below), whose sum is σ = 8346445735680. Its totient is φ = 1070057140800.

The previous prime is 3121000000969. The next prime is 3121000001011. The reversal of 3121000001000 is 1000001213.

3121000001000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222921572 + ... + 222935571.

It is an arithmetic number, because the mean of its divisors is an integer number (130413214620).

Almost surely, 2^{3121000001000} is an apocalyptic number.

It is an amenable number.

3121000001000 is an abundant number, since it is smaller than the sum of its proper divisors (5225445734680).

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

3121000001000 is a wasteful number, since it uses less digits than its factorization.

3121000001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445857171 (or 445857157 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 3121000001000 its reverse (1000001213), we get a palindrome (3122000002213).

The spelling of 3121000001000 in words is "three trillion, one hundred twenty-one billion, one thousand".