3121335252 has 108 divisors (see below), whose sum is σ = 9579038560. Its totient is φ = 839331072.

The previous prime is 3121335251. The next prime is 3121335277. The reversal of 3121335252 is 2525331213.

It is a happy number.

3121335252 is a `hidden beast` number, since 3 + 1 + 2 + 133 + 525 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121335251) 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 in 35 ways as a sum of consecutive naturals, for example, 51399 + ... + 94257.

Almost surely, 2^3121335252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121335252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4789519280).

3121335252 is an abundant number, since it is smaller than the sum of its proper divisors (6457703308).

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

3121335252 is a wasteful number, since it uses less digits than its factorization.

3121335252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42910 (or 42888 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3121335252 is about 55868.9113192659. The cubic root of 3121335252 is about 1461.4371368526.

Adding to 3121335252 its reverse (2525331213), we get a palindrome (5646666465).

The spelling of 3121335252 in words is "three billion, one hundred twenty-one million, three hundred thirty-five thousand, two hundred fifty-two".