140879831 has 8 divisors (see below), whose sum is σ = 146521920. Its totient is φ = 135334368.

The previous prime is 140879803. The next prime is 140879839. The reversal of 140879831 is 138978041.

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 140879831 - 2¹⁰ = 140878807 is a prime.

It is a super-2 number, since 2×140879831² = 39694253565177122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140879839) 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, 21176 + ... + 27021.

It is an arithmetic number, because the mean of its divisors is an integer number (18315240).

Almost surely, 2^140879831 is an apocalyptic number.

140879831 is a deficient number, since it is larger than the sum of its proper divisors (5642089).

140879831 is an equidigital number, since it uses as much as digits as its factorization.

140879831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48313.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 140879831 is about 11869.2809807503. The cubic root of 140879831 is about 520.3348816754.

The spelling of 140879831 in words is "one hundred forty million, eight hundred seventy-nine thousand, eight hundred thirty-one".