140317081 has 4 divisors (see below), whose sum is σ = 140435892. Its totient is φ = 140198272.

The previous prime is 140317049. The next prime is 140317097. The reversal of 140317081 is 180713041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21855625 + 118461456 = 4675^2 + 10884^2 .

It is a cyclic number.

It is not a de Polignac number, because 140317081 - 2⁵ = 140317049 is a prime.

It is a super-2 number, since 2×140317081² = 39377766440721122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140315081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57616 + ... + 60001.

It is an arithmetic number, because the mean of its divisors is an integer number (35108973).

Almost surely, 2^140317081 is an apocalyptic number.

It is an amenable number.

140317081 is a deficient number, since it is larger than the sum of its proper divisors (118811).

140317081 is a wasteful number, since it uses less digits than its factorization.

140317081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118810.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 140317081 is about 11845.5511057950. The cubic root of 140317081 is about 519.6411244221.

It can be divided in two parts, 14031 and 7081, that added together give a palindrome (21112).

The spelling of 140317081 in words is "one hundred forty million, three hundred seventeen thousand, eighty-one".