140012431 has 16 divisors (see below), whose sum is σ = 158203584. Its totient is φ = 122943744.

The previous prime is 140012413. The next prime is 140012437. The reversal of 140012431 is 134210041.

140012431 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 140012431 - 2⁷ = 140012303 is a prime.

It is a super-2 number, since 2×140012431² = 39206961669059522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140012437) 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, 57715 + ... + 60091.

It is an arithmetic number, because the mean of its divisors is an integer number (9887724).

Almost surely, 2^140012431 is an apocalyptic number.

140012431 is a deficient number, since it is larger than the sum of its proper divisors (18191153).

140012431 is a wasteful number, since it uses less digits than its factorization.

140012431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 140012431 is about 11832.6848601659. The cubic root of 140012431 is about 519.2647782765.

Adding to 140012431 its reverse (134210041), we get a palindrome (274222472).

It can be divided in two parts, 1400 and 12431, that added together give a palindrome (13831).

The spelling of 140012431 in words is "one hundred forty million, twelve thousand, four hundred thirty-one".