140194231 has 2 divisors, whose sum is σ = 140194232. Its totient is φ = 140194230.

The previous prime is 140194213. The next prime is 140194259. The reversal of 140194231 is 132491041.

It is a happy number.

Together with previous prime (140194213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140194231 - 2¹⁷ = 140063159 is a prime.

It is a super-2 number, since 2×140194231² = 39308844811362722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140194196 and 140194205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140192231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70097115 + 70097116.

It is an arithmetic number, because the mean of its divisors is an integer number (70097116).

Almost surely, 2^140194231 is an apocalyptic number.

140194231 is a deficient number, since it is larger than the sum of its proper divisors (1).

140194231 is an equidigital number, since it uses as much as digits as its factorization.

140194231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 140194231 is about 11840.3644791873. The cubic root of 140194231 is about 519.4894285840.

The spelling of 140194231 in words is "one hundred forty million, one hundred ninety-four thousand, two hundred thirty-one".