3506043631 has 4 divisors (see below), whose sum is σ = 3580640352. Its totient is φ = 3431446912.

The previous prime is 3506043623. The next prime is 3506043679. The reversal of 3506043631 is 1363406053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1363406053 = 137 ⋅9951869.

It is a cyclic number.

It is not a de Polignac number, because 3506043631 - 2³ = 3506043623 is a prime.

It is a super-2 number, since 2×3506043631² = 24584683884951328322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3506043593 and 3506043602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3506043691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37298290 + ... + 37298383.

It is an arithmetic number, because the mean of its divisors is an integer number (895160088).

Almost surely, 2^3506043631 is an apocalyptic number.

3506043631 is a deficient number, since it is larger than the sum of its proper divisors (74596721).

3506043631 is an equidigital number, since it uses as much as digits as its factorization.

3506043631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74596720.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 3506043631 is about 59211.8538047915. The cubic root of 3506043631 is about 1519.1678892825.

Adding to 3506043631 its reverse (1363406053), we get a palindrome (4869449684).

The spelling of 3506043631 in words is "three billion, five hundred six million, forty-three thousand, six hundred thirty-one".