3631147081 has 3 divisors (see below), whose sum is σ = 3631207341. Its totient is φ = 3631086822.

The previous prime is 3631147067. The next prime is 3631147099. The reversal of 3631147081 is 1807411363.

The square root of 3631147081 is 60259.

It is a perfect power (a square), and thus also a powerful number.

3631147081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-3631147081 is a prime.

It is a super-2 number, since 2×3631147081² = 26370458247709641122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3631147021) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 30130 + ... + 90388.

It is an arithmetic number, because the mean of its divisors is an integer number (1210402447).

Almost surely, 2^3631147081 is an apocalyptic number.

3631147081 is the 60259-th square number.

3631147081 is the 30130-th centered octagonal number.

It is an amenable number.

3631147081 is a deficient number, since it is larger than the sum of its proper divisors (60260).

3631147081 is an frugal number, since it uses more digits than its factorization.

3631147081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120518 (or 60259 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The cubic root of 3631147081 is about 1537.0262342344.

The spelling of 3631147081 in words is "three billion, six hundred thirty-one million, one hundred forty-seven thousand, eighty-one".