673445431 has 4 divisors (see below), whose sum is σ = 673557664. Its totient is φ = 673333200.

The previous prime is 673445419. The next prime is 673445441. The reversal of 673445431 is 134544376.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 673445431 - 2⁷ = 673445303 is a prime.

It is a super-2 number, since 2×673445431² = 907057497069551522, 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 (673445441) 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, 46575 + ... + 59296.

It is an arithmetic number, because the mean of its divisors is an integer number (168389416).

Almost surely, 2^673445431 is an apocalyptic number.

673445431 is a deficient number, since it is larger than the sum of its proper divisors (112233).

673445431 is a wasteful number, since it uses less digits than its factorization.

673445431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112232.

The product of its digits is 120960, while the sum is 37.

The square root of 673445431 is about 25950.8271737145. The cubic root of 673445431 is about 876.5313834790.

The spelling of 673445431 in words is "six hundred seventy-three million, four hundred forty-five thousand, four hundred thirty-one".