140251431 has 8 divisors (see below), whose sum is σ = 190980864. Its totient is φ = 91511480.

The previous prime is 140251403. The next prime is 140251457. The reversal of 140251431 is 134152041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140251431 - 2¹³ = 140243239 is a prime.

It is a super-2 number, since 2×140251431² = 39340927795095522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140251398 and 140251407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140251831) 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 in 7 ways as a sum of consecutive naturals, for example, 497205 + ... + 497486.

It is an arithmetic number, because the mean of its divisors is an integer number (23872608).

Almost surely, 2^140251431 is an apocalyptic number.

140251431 is a deficient number, since it is larger than the sum of its proper divisors (50729433).

140251431 is an equidigital number, since it uses as much as digits as its factorization.

140251431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994741.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 140251431 is about 11842.7796990403. The cubic root of 140251431 is about 519.5600704708.

The spelling of 140251431 in words is "one hundred forty million, two hundred fifty-one thousand, four hundred thirty-one".