140545531 has 16 divisors (see below), whose sum is σ = 162993600. Its totient is φ = 118702080.

The previous prime is 140545523. The next prime is 140545549. The reversal of 140545531 is 135545041.

140545531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140545531 - 2³ = 140545523 is a prime.

It is a super-2 number, since 2×140545531² = 39506092568143922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140545531.

It is not an unprimeable number, because it can be changed into a prime (140545501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304641 + ... + 305101.

It is an arithmetic number, because the mean of its divisors is an integer number (10187100).

Almost surely, 2^140545531 is an apocalyptic number.

140545531 is a deficient number, since it is larger than the sum of its proper divisors (22448069).

140545531 is an equidigital number, since it uses as much as digits as its factorization.

140545531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 140545531 is about 11855.1900448706. The cubic root of 140545531 is about 519.9229804568.

The spelling of 140545531 in words is "one hundred forty million, five hundred forty-five thousand, five hundred thirty-one".