140232631 has 16 divisors (see below), whose sum is σ = 178560000. Its totient is φ = 106944480.

The previous prime is 140232619. The next prime is 140232637. The reversal of 140232631 is 136232041.

It is a cyclic number.

It is not a de Polignac number, because 140232631 - 2⁹ = 140232119 is a prime.

It is a super-3 number, since 3×140232631³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140232637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15756 + ... + 22993.

It is an arithmetic number, because the mean of its divisors is an integer number (11160000).

Almost surely, 2^140232631 is an apocalyptic number.

140232631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140232631 is a deficient number, since it is larger than the sum of its proper divisors (38327369).

140232631 is a wasteful number, since it uses less digits than its factorization.

140232631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38814.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 140232631 is about 11841.9859398667. The cubic root of 140232631 is about 519.5368546273.

Adding to 140232631 its reverse (136232041), we get a palindrome (276464672).

The spelling of 140232631 in words is "one hundred forty million, two hundred thirty-two thousand, six hundred thirty-one".