140093181 has 24 divisors (see below), whose sum is σ = 206254880. Its totient is φ = 91609056.

The previous prime is 140093167. The next prime is 140093189. The reversal of 140093181 is 181390041.

It is not a de Polignac number, because 140093181 - 2⁶ = 140093117 is a prime.

It is a super-2 number, since 2×140093181² = 39252198725397522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140093189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228231 + ... + 228843.

Almost surely, 2^140093181 is an apocalyptic number.

It is an amenable number.

140093181 is a deficient number, since it is larger than the sum of its proper divisors (66161699).

140093181 is a wasteful number, since it uses less digits than its factorization.

140093181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 140093181 is about 11836.0965271495. The cubic root of 140093181 is about 519.3645850631.

The spelling of 140093181 in words is "one hundred forty million, ninety-three thousand, one hundred eighty-one".