140718831 has 8 divisors (see below), whose sum is σ = 204681984. Its totient is φ = 85284120.

The previous prime is 140718797. The next prime is 140718839. The reversal of 140718831 is 138817041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140718831 - 2²⁵ = 107164399 is a prime.

It is a super-2 number, since 2×140718831² = 39603578796013122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 4264207 = 140718831 / (1 + 4 + 0 + 7 + 1 + 8 + 8 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 140718792 and 140718801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140718839) 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, 2132071 + ... + 2132136.

It is an arithmetic number, because the mean of its divisors is an integer number (25585248).

Almost surely, 2^140718831 is an apocalyptic number.

140718831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140718831 is a deficient number, since it is larger than the sum of its proper divisors (63963153).

140718831 is a wasteful number, since it uses less digits than its factorization.

140718831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4264221.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 140718831 is about 11862.4968282398. The cubic root of 140718831 is about 520.1365901045.

The spelling of 140718831 in words is "one hundred forty million, seven hundred eighteen thousand, eight hundred thirty-one".