1673043431 has 4 divisors (see below), whose sum is σ = 1673214312. Its totient is φ = 1672872552.

The previous prime is 1673043413. The next prime is 1673043439. The reversal of 1673043431 is 1343403761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343403761 = 7 ⋅191914823.

It is a cyclic number.

It is not a de Polignac number, because 1673043431 - 2¹⁰ = 1673042407 is a prime.

It is a super-2 number, since 2×1673043431² = 5598148644024503522, 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 (1673043439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69800 + ... + 90653.

It is an arithmetic number, because the mean of its divisors is an integer number (418303578).

Almost surely, 2^1673043431 is an apocalyptic number.

1673043431 is a deficient number, since it is larger than the sum of its proper divisors (170881).

1673043431 is a wasteful number, since it uses less digits than its factorization.

1673043431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170880.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 1673043431 is about 40902.8535801599. The cubic root of 1673043431 is about 1187.1412751509.

The spelling of 1673043431 in words is "one billion, six hundred seventy-three million, forty-three thousand, four hundred thirty-one".