3121987332 has 24 divisors (see below), whose sum is σ = 7481520256. Its totient is φ = 1012536288.

The previous prime is 3121987331. The next prime is 3121987397. The reversal of 3121987332 is 2337891213.

3121987332 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3121987331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3515308 + ... + 3516195.

Almost surely, 2^3121987332 is an apocalyptic number.

It is an amenable number.

3121987332 is an abundant number, since it is smaller than the sum of its proper divisors (4359532924).

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

3121987332 is a wasteful number, since it uses less digits than its factorization.

3121987332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031547 (or 7031545 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 3121987332 is about 55874.7468182183. The cubic root of 3121987332 is about 1461.5388996663.

The spelling of 3121987332 in words is "three billion, one hundred twenty-one million, nine hundred eighty-seven thousand, three hundred thirty-two".