140131523 has 12 divisors (see below), whose sum is σ = 166088880. Its totient is φ = 117844272.

The previous prime is 140131489. The next prime is 140131529. The reversal of 140131523 is 325131041.

It is not a de Polignac number, because 140131523 - 2²⁴ = 123354307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140131495 and 140131504.

It is not an unprimeable number, because it can be changed into a prime (140131529) 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 11 ways as a sum of consecutive naturals, for example, 24383 + ... + 29576.

It is an arithmetic number, because the mean of its divisors is an integer number (13840740).

Almost surely, 2^140131523 is an apocalyptic number.

140131523 is a deficient number, since it is larger than the sum of its proper divisors (25957357).

140131523 is an equidigital number, since it uses as much as digits as its factorization.

140131523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54026 (or 54019 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 140131523 is about 11837.7161226311. The cubic root of 140131523 is about 519.4119622454.

Adding to 140131523 its reverse (325131041), we get a palindrome (465262564).

The spelling of 140131523 in words is "one hundred forty million, one hundred thirty-one thousand, five hundred twenty-three".