140285813 has 4 divisors (see below), whose sum is σ = 140508768. Its totient is φ = 140062860.

The previous prime is 140285807. The next prime is 140285839. The reversal of 140285813 is 318582041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140285813 - 2¹⁰ = 140284789 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 140285813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140285213) 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, 110531 + ... + 111792.

It is an arithmetic number, because the mean of its divisors is an integer number (35127192).

Almost surely, 2^140285813 is an apocalyptic number.

It is an amenable number.

140285813 is a deficient number, since it is larger than the sum of its proper divisors (222955).

140285813 is an equidigital number, since it uses as much as digits as its factorization.

140285813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222954.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 140285813 is about 11844.2312118601. The cubic root of 140285813 is about 519.6025229308.

The spelling of 140285813 in words is "one hundred forty million, two hundred eighty-five thousand, eight hundred thirteen".