3121130552 has 8 divisors (see below), whose sum is σ = 5852119800. Its totient is φ = 1560565272.

The previous prime is 3121130501. The next prime is 3121130569. The reversal of 3121130552 is 2550311213.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195070652 + ... + 195070667.

It is an arithmetic number, because the mean of its divisors is an integer number (731514975).

Almost surely, 2^3121130552 is an apocalyptic number.

It is an amenable number.

3121130552 is a deficient number, since it is larger than the sum of its proper divisors (2730989248).

3121130552 is a wasteful number, since it uses less digits than its factorization.

3121130552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390141325 (or 390141321 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 3121130552 is about 55867.0793222628. The cubic root of 3121130552 is about 1461.4051886960.

Adding to 3121130552 its reverse (2550311213), we get a palindrome (5671441765).

The spelling of 3121130552 in words is "three billion, one hundred twenty-one million, one hundred thirty thousand, five hundred fifty-two".