3531212416 has 64 divisors (see below), whose sum is σ = 7140846600. Its totient is φ = 1739161600.

The previous prime is 3531212383. The next prime is 3531212423. The reversal of 3531212416 is 6142121353.

It can be written as a sum of positive squares in 4 ways, for example, as 2775182400 + 756030016 = 52680^2 + 27496^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×3531212416² = 24938922253825114112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4567806 + ... + 4568578.

Almost surely, 2^3531212416 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 3531212416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3570423300).

3531212416 is an abundant number, since it is smaller than the sum of its proper divisors (3609634184).

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

3531212416 is an equidigital number, since it uses as much as digits as its factorization.

3531212416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1265 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 3531212416 is about 59424.0053850294. The cubic root of 3531212416 is about 1522.7944346943.

Adding to 3531212416 its reverse (6142121353), we get a palindrome (9673333769).

The spelling of 3531212416 in words is "three billion, five hundred thirty-one million, two hundred twelve thousand, four hundred sixteen".