3121023101100 has 72 divisors (see below), whose sum is σ = 9038303751120. Its totient is φ = 831522266880.

The previous prime is 3121023101099. The next prime is 3121023101129. The reversal of 3121023101100 is 11013201213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3121023101100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4357747 + ... + 5023146.

Almost surely, 2^{3121023101100} is an apocalyptic number.

3121023101100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121023101100 is an abundant number, since it is smaller than the sum of its proper divisors (5917280650020).

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

3121023101100 is a wasteful number, since it uses less digits than its factorization.

3121023101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9382019 (or 9382012 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 3121023101100 its reverse (11013201213), we get a palindrome (3132036302313).

The spelling of 3121023101100 in words is "three trillion, one hundred twenty-one billion, twenty-three million, one hundred one thousand, one hundred".