140503031531 has 4 divisors (see below), whose sum is σ = 140508990864. Its totient is φ = 140497072200.

The previous prime is 140503031491. The next prime is 140503031533. The reversal of 140503031531 is 135130305041.

140503031531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140503031531 is a prime.

It is a super-2 number, since 2×140503031531² (a number of 23 digits) 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 140503031531.

It is not an unprimeable number, because it can be changed into a prime (140503031533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2944160 + ... + 2991501.

It is an arithmetic number, because the mean of its divisors is an integer number (35127247716).

Almost surely, 2^140503031531 is an apocalyptic number.

140503031531 is a deficient number, since it is larger than the sum of its proper divisors (5959333).

140503031531 is an equidigital number, since it uses as much as digits as its factorization.

140503031531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959332.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 140503031531 its reverse (135130305041), we get a palindrome (275633336572).

The spelling of 140503031531 in words is "one hundred forty billion, five hundred three million, thirty-one thousand, five hundred thirty-one".