140611431 has 4 divisors (see below), whose sum is σ = 187481912. Its totient is φ = 93740952.

The previous prime is 140611423. The next prime is 140611447. The reversal of 140611431 is 134116041.

140611431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 140611431 - 2³ = 140611423 is a prime.

It is a super-2 number, since 2×140611431² = 39543149055735522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140611398 and 140611407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140611531) 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, 23435236 + ... + 23435241.

It is an arithmetic number, because the mean of its divisors is an integer number (46870478).

Almost surely, 2^140611431 is an apocalyptic number.

140611431 is a deficient number, since it is larger than the sum of its proper divisors (46870481).

140611431 is an equidigital number, since it uses as much as digits as its factorization.

140611431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46870480.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 140611431 is about 11857.9690925554. The cubic root of 140611431 is about 520.0042295021.

Adding to 140611431 its reverse (134116041), we get a palindrome (274727472).

The spelling of 140611431 in words is "one hundred forty million, six hundred eleven thousand, four hundred thirty-one".