3121123950 has 144 divisors (see below), whose sum is σ = 9603135360. Its totient is φ = 711927360.

The previous prime is 3121123921. The next prime is 3121123963. The reversal of 3121123950 is 593211213.

It is a super-2 number, since 2×3121123950² = 19482829422527205000, 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 71 ways as a sum of consecutive naturals, for example, 2478421 + ... + 2479679.

It is an arithmetic number, because the mean of its divisors is an integer number (66688440).

Almost surely, 2^3121123950 is an apocalyptic number.

3121123950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121123950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4801567680).

3121123950 is an abundant number, since it is smaller than the sum of its proper divisors (6482011410).

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

3121123950 is a wasteful number, since it uses less digits than its factorization.

3121123950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 2063 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 3121123950 is about 55867.0202355558. The cubic root of 3121123950 is about 1461.4041582784.

The spelling of 3121123950 in words is "three billion, one hundred twenty-one million, one hundred twenty-three thousand, nine hundred fifty".