140345311 has 4 divisors (see below), whose sum is σ = 140537512. Its totient is φ = 140153112.

The previous prime is 140345263. The next prime is 140345321. The reversal of 140345311 is 113543041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140345311 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 (140345321) 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, 95001 + ... + 96466.

It is an arithmetic number, because the mean of its divisors is an integer number (35134378).

Almost surely, 2^140345311 is an apocalyptic number.

140345311 is a deficient number, since it is larger than the sum of its proper divisors (192201).

140345311 is an equidigital number, since it uses as much as digits as its factorization.

140345311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192200.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 140345311 is about 11846.7426324708. The cubic root of 140345311 is about 519.6759704655.

Adding to 140345311 its reverse (113543041), we get a palindrome (253888352).

The spelling of 140345311 in words is "one hundred forty million, three hundred forty-five thousand, three hundred eleven".