140544631 has 8 divisors (see below), whose sum is σ = 142823664. Its totient is φ = 138283200.

The previous prime is 140544629. The next prime is 140544641. The reversal of 140544631 is 136445041.

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 140544631 - 2¹ = 140544629 is a prime.

It is a super-2 number, since 2×140544631² = 39505586605852322, which 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 140544631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140544641) 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, 12195 + ... + 20731.

It is an arithmetic number, because the mean of its divisors is an integer number (17852958).

Almost surely, 2^140544631 is an apocalyptic number.

140544631 is a deficient number, since it is larger than the sum of its proper divisors (2279033).

140544631 is a wasteful number, since it uses less digits than its factorization.

140544631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8801.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 140544631 is about 11855.1520867511. The cubic root of 140544631 is about 519.9218706582.

Adding to 140544631 its reverse (136445041), we get a palindrome (276989672).

The spelling of 140544631 in words is "one hundred forty million, five hundred forty-four thousand, six hundred thirty-one".