140251231 has 8 divisors (see below), whose sum is σ = 141614000. Its totient is φ = 138894912.

The previous prime is 140251229. The next prime is 140251247. The reversal of 140251231 is 132152041.

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 140251231 - 2¹ = 140251229 is a prime.

It is a super-2 number, since 2×140251231² = 39340815594030722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140251199 and 140251208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140251211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49645 + ... + 52393.

It is an arithmetic number, because the mean of its divisors is an integer number (17701750).

Almost surely, 2^140251231 is an apocalyptic number.

140251231 is a deficient number, since it is larger than the sum of its proper divisors (1362769).

140251231 is a wasteful number, since it uses less digits than its factorization.

140251231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 140251231 is about 11842.7712550737. The cubic root of 140251231 is about 519.5598235046.

The spelling of 140251231 in words is "one hundred forty million, two hundred fifty-one thousand, two hundred thirty-one".