3121545130 has 32 divisors (see below), whose sum is σ = 6153485760. Its totient is φ = 1130680320.

The previous prime is 3121545079. The next prime is 3121545143. The reversal of 3121545130 is 315451213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3121545095 and 3121545104.

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, 26940 + ... + 83479.

It is an arithmetic number, because the mean of its divisors is an integer number (192296430).

Almost surely, 2^3121545130 is an apocalyptic number.

3121545130 is a deficient number, since it is larger than the sum of its proper divisors (3031940630).

3121545130 is a wasteful number, since it uses less digits than its factorization.

3121545130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110694.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 3121545130 is about 55870.7895952796. The cubic root of 3121545130 is about 1461.4698917052.

Adding to 3121545130 its reverse (315451213), we get a palindrome (3436996343).

The spelling of 3121545130 in words is "three billion, one hundred twenty-one million, five hundred forty-five thousand, one hundred thirty".