1340231673 has 8 divisors (see below), whose sum is σ = 1949427936. Its totient is φ = 812261600.

The previous prime is 1340231663. The next prime is 1340231693. The reversal of 1340231673 is 3761320431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340231673 - 2⁹ = 1340231161 is a prime.

It is a super-4 number, since 4×1340231673⁴ (a number of 38 digits) contains 4444 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340231673.

It is not an unprimeable number, because it can be changed into a prime (1340231653) 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, 20306508 + ... + 20306573.

It is an arithmetic number, because the mean of its divisors is an integer number (243678492).

Almost surely, 2^1340231673 is an apocalyptic number.

It is an amenable number.

1340231673 is a deficient number, since it is larger than the sum of its proper divisors (609196263).

1340231673 is a wasteful number, since it uses less digits than its factorization.

1340231673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40613095.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 1340231673 is about 36609.1747107197. The cubic root of 1340231673 is about 1102.5373034617.

The spelling of 1340231673 in words is "one billion, three hundred forty million, two hundred thirty-one thousand, six hundred seventy-three".