3123121532 has 6 divisors (see below), whose sum is σ = 5465462688. Its totient is φ = 1561560764.

The previous prime is 3123121531. The next prime is 3123121537. The reversal of 3123121532 is 2351213213.

It is a junction number, because it is equal to n+sod(n) for n = 3123121498 and 3123121507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123121531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390390188 + ... + 390390195.

It is an arithmetic number, because the mean of its divisors is an integer number (910910448).

Almost surely, 2^3123121532 is an apocalyptic number.

It is an amenable number.

3123121532 is a deficient number, since it is larger than the sum of its proper divisors (2342341156).

3123121532 is a wasteful number, since it uses less digits than its factorization.

3123121532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780780387 (or 780780385 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 3123121532 is about 55884.8953832787. The cubic root of 3123121532 is about 1461.7158677898.

Adding to 3123121532 its reverse (2351213213), we get a palindrome (5474334745).

The spelling of 3123121532 in words is "three billion, one hundred twenty-three million, one hundred twenty-one thousand, five hundred thirty-two".