140213811 has 16 divisors (see below), whose sum is σ = 193744800. Its totient is φ = 90091008.

The previous prime is 140213783. The next prime is 140213813. The reversal of 140213811 is 118312041.

It is a happy number.

It is not a de Polignac number, because 140213811 - 2⁹ = 140213299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140213813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64795 + ... + 66923.

It is an arithmetic number, because the mean of its divisors is an integer number (12109050).

Almost surely, 2^140213811 is an apocalyptic number.

140213811 is a deficient number, since it is larger than the sum of its proper divisors (53530989).

140213811 is a wasteful number, since it uses less digits than its factorization.

140213811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 140213811 is about 11841.1912829749. The cubic root of 140213811 is about 519.5136120078.

Adding to 140213811 its reverse (118312041), we get a palindrome (258525852).

The spelling of 140213811 in words is "one hundred forty million, two hundred thirteen thousand, eight hundred eleven".