3427521631 has 16 divisors (see below), whose sum is σ = 3504362400. Its totient is φ = 3351744000.

The previous prime is 3427521611. The next prime is 3427521637. The reversal of 3427521631 is 1361257243.

It is a cyclic number.

It is not a de Polignac number, because 3427521631 - 2⁵ = 3427521599 is a prime.

It is a super-2 number, since 2×3427521631² = 23495809061945800322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427521637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5702731 + ... + 5703331.

It is an arithmetic number, because the mean of its divisors is an integer number (219022650).

Almost surely, 2^3427521631 is an apocalyptic number.

3427521631 is a deficient number, since it is larger than the sum of its proper divisors (76840769).

3427521631 is a wasteful number, since it uses less digits than its factorization.

3427521631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

The product of its digits is 30240, while the sum is 34.

The square root of 3427521631 is about 58545.0393372487. The cubic root of 3427521631 is about 1507.7409652882.

Adding to 3427521631 its reverse (1361257243), we get a palindrome (4788778874).

The spelling of 3427521631 in words is "three billion, four hundred twenty-seven million, five hundred twenty-one thousand, six hundred thirty-one".