140068231 has 8 divisors (see below), whose sum is σ = 145057680. Its totient is φ = 135089472.

The previous prime is 140068223. The next prime is 140068249. The reversal of 140068231 is 132860041.

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 140068231 - 2³ = 140068223 is a prime.

It is a super-2 number, since 2×140068231² = 39238218670938722, 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 = 140068196 and 140068205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140068211) 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, 31651 + ... + 35803.

It is an arithmetic number, because the mean of its divisors is an integer number (18132210).

Almost surely, 2^140068231 is an apocalyptic number.

140068231 is a deficient number, since it is larger than the sum of its proper divisors (4989449).

140068231 is a wasteful number, since it uses less digits than its factorization.

140068231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 140068231 is about 11835.0425009799. The cubic root of 140068231 is about 519.3337510243. Note that the first 3 decimals are identical.

The spelling of 140068231 in words is "one hundred forty million, sixty-eight thousand, two hundred thirty-one".