1066743431 has 8 divisors (see below), whose sum is σ = 1155443520. Its totient is φ = 978992352.

The previous prime is 1066743401. The next prime is 1066743437. The reversal of 1066743431 is 1343476601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1066743431 - 2¹⁴ = 1066727047 is a prime.

It is a super-2 number, since 2×1066743431² = 2275883095163303522, 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 = 1066743391 and 1066743400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066743437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234911 + ... + 239408.

It is an arithmetic number, because the mean of its divisors is an integer number (144430440).

Almost surely, 2^1066743431 is an apocalyptic number.

1066743431 is a deficient number, since it is larger than the sum of its proper divisors (88700089).

1066743431 is a wasteful number, since it uses less digits than its factorization.

1066743431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474505.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 1066743431 is about 32661.0384250103. The cubic root of 1066743431 is about 1021.7704197837.

The spelling of 1066743431 in words is "one billion, sixty-six million, seven hundred forty-three thousand, four hundred thirty-one".