140180831 has 4 divisors (see below), whose sum is σ = 160206672. Its totient is φ = 120154992.

The previous prime is 140180797. The next prime is 140180849. The reversal of 140180831 is 138081041.

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

It is a cyclic number.

It is not a de Polignac number, because 140180831 - 2²² = 135986527 is a prime.

It is a super-2 number, since 2×140180831² = 39301330759701122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140180831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140180851) 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, 10012910 + ... + 10012923.

It is an arithmetic number, because the mean of its divisors is an integer number (40051668).

Almost surely, 2^140180831 is an apocalyptic number.

140180831 is a deficient number, since it is larger than the sum of its proper divisors (20025841).

140180831 is an equidigital number, since it uses as much as digits as its factorization.

140180831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20025840.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 140180831 is about 11839.7986047061. The cubic root of 140180831 is about 519.4728768327.

The spelling of 140180831 in words is "one hundred forty million, one hundred eighty thousand, eight hundred thirty-one".