3121143100 has 72 divisors (see below), whose sum is σ = 6935056128. Its totient is φ = 1218705600.

The previous prime is 3121143049. The next prime is 3121143119. The reversal of 3121143100 is 13411213.

3121143100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3121143100² = 19483068501355220000, which contains 22 as substring.

It is a congruent number.

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, 2683119 + ... + 2684281.

It is an arithmetic number, because the mean of its divisors is an integer number (96320224).

Almost surely, 2^3121143100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121143100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3467528064).

3121143100 is an abundant number, since it is smaller than the sum of its proper divisors (3813913028).

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

3121143100 is a wasteful number, since it uses less digits than its factorization.

3121143100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3121143100 is about 55867.1916244230. The cubic root of 3121143100 is about 1461.4071471410.

Adding to 3121143100 its reverse (13411213), we get a palindrome (3134554313).

The spelling of 3121143100 in words is "three billion, one hundred twenty-one million, one hundred forty-three thousand, one hundred".