140845431 has 16 divisors (see below), whose sum is σ = 200540160. Its totient is φ = 87732960.

The previous prime is 140845429. The next prime is 140845451. The reversal of 140845431 is 134548041.

It is not a de Polignac number, because 140845431 - 2¹ = 140845429 is a prime.

It is a super-2 number, since 2×140845431² = 39674870867151522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140845451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23415 + ... + 28808.

It is an arithmetic number, because the mean of its divisors is an integer number (12533760).

Almost surely, 2^140845431 is an apocalyptic number.

140845431 is a deficient number, since it is larger than the sum of its proper divisors (59694729).

140845431 is a wasteful number, since it uses less digits than its factorization.

140845431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52286.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 140845431 is about 11867.8317733274. The cubic root of 140845431 is about 520.2925264830.

The spelling of 140845431 in words is "one hundred forty million, eight hundred forty-five thousand, four hundred thirty-one".