140015345531 has 4 divisors (see below), whose sum is σ = 140513621064. Its totient is φ = 139517070000.

The previous prime is 140015345497. The next prime is 140015345543. The reversal of 140015345531 is 135543510041.

140015345531 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 not a de Polignac number, because 140015345531 - 2²² = 140011151227 is a prime.

It is a super-2 number, since 2×140015345531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140015345831) 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, 249137345 + ... + 249137906.

It is an arithmetic number, because the mean of its divisors is an integer number (35128405266).

Almost surely, 2^140015345531 is an apocalyptic number.

140015345531 is a deficient number, since it is larger than the sum of its proper divisors (498275533).

140015345531 is an equidigital number, since it uses as much as digits as its factorization.

140015345531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498275532.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 140015345531 its reverse (135543510041), we get a palindrome (275558855572).

The spelling of 140015345531 in words is "one hundred forty billion, fifteen million, three hundred forty-five thousand, five hundred thirty-one".