140248231 has 2 divisors, whose sum is σ = 140248232. Its totient is φ = 140248230.

The previous prime is 140248193. The next prime is 140248237. The reversal of 140248231 is 132842041.

It is a strong prime.

It is an emirp because it is prime and its reverse (132842041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140248231 - 2⁹ = 140247719 is a prime.

It is a super-2 number, since 2×140248231² = 39339132597258722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140248196 and 140248205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140248237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70124115 + 70124116.

It is an arithmetic number, because the mean of its divisors is an integer number (70124116).

Almost surely, 2^140248231 is an apocalyptic number.

140248231 is a deficient number, since it is larger than the sum of its proper divisors (1).

140248231 is an equidigital number, since it uses as much as digits as its factorization.

140248231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 140248231 is about 11842.6445948530. The cubic root of 140248231 is about 519.5561189843.

The spelling of 140248231 in words is "one hundred forty million, two hundred forty-eight thousand, two hundred thirty-one".