140127231 has 4 divisors (see below), whose sum is σ = 186836312. Its totient is φ = 93418152.

The previous prime is 140127227. The next prime is 140127241. The reversal of 140127231 is 132721041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132721041 = 3 ⋅44240347.

It is not a de Polignac number, because 140127231 - 2² = 140127227 is a prime.

It is a super-2 number, since 2×140127231² = 39271281735454722, 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 = 140127198 and 140127207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140127241) 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 3 ways as a sum of consecutive naturals, for example, 23354536 + ... + 23354541.

It is an arithmetic number, because the mean of its divisors is an integer number (46709078).

Almost surely, 2^140127231 is an apocalyptic number.

140127231 is a deficient number, since it is larger than the sum of its proper divisors (46709081).

140127231 is an equidigital number, since it uses as much as digits as its factorization.

140127231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46709080.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 140127231 is about 11837.5348362740. The cubic root of 140127231 is about 519.4066592775.

Adding to 140127231 its reverse (132721041), we get a palindrome (272848272).

The spelling of 140127231 in words is "one hundred forty million, one hundred twenty-seven thousand, two hundred thirty-one".