431672643 has 6 divisors (see below), whose sum is σ = 623527164. Its totient is φ = 287781756.

The previous prime is 431672611. The next prime is 431672677. The reversal of 431672643 is 346276134.

It is a happy number.

431672643 is a `hidden beast` number, since 4 + 3 + 1 + 6 + 7 + 2 + 643 = 666.

It is not a de Polignac number, because 431672643 - 2⁵ = 431672611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431672598 and 431672607.

It is not an unprimeable number, because it can be changed into a prime (431672243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23981805 + ... + 23981822.

It is an arithmetic number, because the mean of its divisors is an integer number (103921194).

Almost surely, 2^431672643 is an apocalyptic number.

431672643 is a deficient number, since it is larger than the sum of its proper divisors (191854521).

431672643 is a wasteful number, since it uses less digits than its factorization.

431672643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47963633 (or 47963630 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 431672643 is about 20776.7332128995. The cubic root of 431672643 is about 755.7616354007.

The spelling of 431672643 in words is "four hundred thirty-one million, six hundred seventy-two thousand, six hundred forty-three".