140732231 has 2 divisors, whose sum is σ = 140732232. Its totient is φ = 140732230.

The previous prime is 140732209. The next prime is 140732237. The reversal of 140732231 is 132237041.

140732231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140732231 - 2²⁶ = 73623367 is a prime.

It is a super-2 number, since 2×140732231² = 39611121684474722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140732197 and 140732206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140732237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70366115 + 70366116.

It is an arithmetic number, because the mean of its divisors is an integer number (70366116).

Almost surely, 2^140732231 is an apocalyptic number.

140732231 is a deficient number, since it is larger than the sum of its proper divisors (1).

140732231 is an equidigital number, since it uses as much as digits as its factorization.

140732231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 140732231 is about 11863.0616200035. The cubic root of 140732231 is about 520.1530996435.

Adding to 140732231 its reverse (132237041), we get a palindrome (272969272).

The spelling of 140732231 in words is "one hundred forty million, seven hundred thirty-two thousand, two hundred thirty-one".