140531263 has 4 divisors (see below), whose sum is σ = 140573160. Its totient is φ = 140489368.

The previous prime is 140531233. The next prime is 140531323. The reversal of 140531263 is 362135041.

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

It is a cyclic number.

It is not a de Polignac number, because 140531263 - 2¹⁷ = 140400191 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 (140531233) 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 3 ways as a sum of consecutive naturals, for example, 15433 + ... + 22786.

It is an arithmetic number, because the mean of its divisors is an integer number (35143290).

Almost surely, 2^140531263 is an apocalyptic number.

140531263 is a deficient number, since it is larger than the sum of its proper divisors (41897).

140531263 is an equidigital number, since it uses as much as digits as its factorization.

140531263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41896.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 140531263 is about 11854.5882678396. The cubic root of 140531263 is about 519.9053858925.

The spelling of 140531263 in words is "one hundred forty million, five hundred thirty-one thousand, two hundred sixty-three".