3613531320 has 96 divisors (see below), whose sum is σ = 13421697120. Its totient is φ = 825949440.

The previous prime is 3613531309. The next prime is 3613531331. The reversal of 3613531320 is 231353163.

It is a happy number.

3613531320 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 an interprime number because it is at equal distance from previous prime (3613531309) and next prime (3613531331).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 714451 + ... + 719490.

It is an arithmetic number, because the mean of its divisors is an integer number (139809345).

Almost surely, 2^3613531320 is an apocalyptic number.

3613531320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3613531320 is an abundant number, since it is smaller than the sum of its proper divisors (9808165800).

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

3613531320 is a wasteful number, since it uses less digits than its factorization.

3613531320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433965 (or 1433958 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 3613531320 is about 60112.6552399742. The cubic root of 3613531320 is about 1534.5366821327.

Adding to 3613531320 its reverse (231353163), we get a palindrome (3844884483).

The spelling of 3613531320 in words is "three billion, six hundred thirteen million, five hundred thirty-one thousand, three hundred twenty".