3406645431 has 28 divisors (see below), whose sum is σ = 5837302032. Its totient is φ = 1946651616.

The previous prime is 3406645423. The next prime is 3406645441. The reversal of 3406645431 is 1345466043.

3406645431 is a `hidden beast` number, since 3 + 4 + 0 + 6 + 645 + 4 + 3 + 1 = 666.

3406645431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3406645431 - 2³ = 3406645423 is a prime.

It is a super-2 number, since 2×3406645431² = 23210466185106351522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3406645441) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 328686 + ... + 338891.

Almost surely, 2^3406645431 is an apocalyptic number.

3406645431 is a deficient number, since it is larger than the sum of its proper divisors (2430656601).

3406645431 is an frugal number, since it uses more digits than its factorization.

3406645431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667602 (or 667587 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 3406645431 is about 58366.4752319343. The cubic root of 3406645431 is about 1504.6736349670.

It can be divided in two parts, 34066 and 45431, that added together give a palindrome (79497).

The spelling of 3406645431 in words is "three billion, four hundred six million, six hundred forty-five thousand, four hundred thirty-one".