140231311 has 16 divisors (see below), whose sum is σ = 155323008. Its totient is φ = 125546400.

The previous prime is 140231297. The next prime is 140231323. The reversal of 140231311 is 113132041.

140231311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 140231311 - 2²⁷ = 6013583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140231411) 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, 332881 + ... + 333301.

It is an arithmetic number, because the mean of its divisors is an integer number (9707688).

Almost surely, 2^140231311 is an apocalyptic number.

140231311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140231311 is a deficient number, since it is larger than the sum of its proper divisors (15091697).

140231311 is a wasteful number, since it uses less digits than its factorization.

140231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 140231311 is about 11841.9302058406. The cubic root of 140231311 is about 519.5352245008.

Adding to 140231311 its reverse (113132041), we get a palindrome (253363352).

The spelling of 140231311 in words is "one hundred forty million, two hundred thirty-one thousand, three hundred eleven".