140344361 has 8 divisors (see below), whose sum is σ = 141697248. Its totient is φ = 138996000.

The previous prime is 140344357. The next prime is 140344387. The reversal of 140344361 is 163443041.

140344361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 140344361 - 2² = 140344357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140344361.

It is not an unprimeable number, because it can be changed into a prime (140344301) 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, 105581 + ... + 106901.

It is an arithmetic number, because the mean of its divisors is an integer number (17712156).

Almost surely, 2^140344361 is an apocalyptic number.

It is an amenable number.

140344361 is a deficient number, since it is larger than the sum of its proper divisors (1352887).

140344361 is a wasteful number, since it uses less digits than its factorization.

140344361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 140344361 is about 11846.7025369932. The cubic root of 140344361 is about 519.6747978974.

The spelling of 140344361 in words is "one hundred forty million, three hundred forty-four thousand, three hundred sixty-one".