140606231 has 2 divisors, whose sum is σ = 140606232. Its totient is φ = 140606230.

The previous prime is 140606209. The next prime is 140606237. The reversal of 140606231 is 132606041.

It is a happy number.

140606231 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 an emirp because it is prime and its reverse (132606041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140606231 - 2²⁶ = 73497367 is a prime.

It is a super-2 number, since 2×140606231² = 39540224392050722, 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 = 140606197 and 140606206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140606237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70303115 + 70303116.

It is an arithmetic number, because the mean of its divisors is an integer number (70303116).

Almost surely, 2^140606231 is an apocalyptic number.

140606231 is a deficient number, since it is larger than the sum of its proper divisors (1).

140606231 is an equidigital number, since it uses as much as digits as its factorization.

140606231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 140606231 is about 11857.7498286985. The cubic root of 140606231 is about 519.9978192709.

The spelling of 140606231 in words is "one hundred forty million, six hundred six thousand, two hundred thirty-one".