140445131 has 8 divisors (see below), whose sum is σ = 151443600. Its totient is φ = 129807360.

The previous prime is 140445091. The next prime is 140445133. The reversal of 140445131 is 131544041.

140445131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140445131 - 2¹⁰ = 140444107 is a prime.

It is a super-2 number, since 2×140445131² = 39449669643214322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140445097 and 140445106.

It is not an unprimeable number, because it can be changed into a prime (140445133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89366 + ... + 90923.

It is an arithmetic number, because the mean of its divisors is an integer number (18930450).

Almost surely, 2^140445131 is an apocalyptic number.

140445131 is a deficient number, since it is larger than the sum of its proper divisors (10998469).

140445131 is a wasteful number, since it uses less digits than its factorization.

140445131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180349.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 140445131 is about 11850.9548560443. The cubic root of 140445131 is about 519.7991470349.

Adding to 140445131 its reverse (131544041), we get a palindrome (271989172).

The spelling of 140445131 in words is "one hundred forty million, four hundred forty-five thousand, one hundred thirty-one".