140382431 has 24 divisors (see below), whose sum is σ = 171870624. Its totient is φ = 112285440.

The previous prime is 140382421. The next prime is 140382439. The reversal of 140382431 is 134283041.

140382431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140382431 - 2²⁶ = 73273567 is a prime.

It is a super-2 number, since 2×140382431² = 39414453866939522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140382431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140382439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184091 + ... + 184851.

It is an arithmetic number, because the mean of its divisors is an integer number (7161276).

Almost surely, 2^140382431 is an apocalyptic number.

140382431 is a deficient number, since it is larger than the sum of its proper divisors (31488193).

140382431 is an equidigital number, since it uses as much as digits as its factorization.

140382431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 140382431 is about 11848.3092042705. The cubic root of 140382431 is about 519.7217828773.

The spelling of 140382431 in words is "one hundred forty million, three hundred eighty-two thousand, four hundred thirty-one".