140859931 has 6 divisors (see below), whose sum is σ = 145885532. Its totient is φ = 136001880.

The previous prime is 140859883. The next prime is 140859947. The reversal of 140859931 is 139958041.

It is not a de Polignac number, because 140859931 - 2¹¹ = 140857883 is a prime.

It is a super-2 number, since 2×140859931² = 39683040322649522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140859031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82905 + ... + 84586.

Almost surely, 2^140859931 is an apocalyptic number.

140859931 is a deficient number, since it is larger than the sum of its proper divisors (5025601).

140859931 is an equidigital number, since it uses as much as digits as its factorization.

140859931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167549 (or 167520 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 140859931 is about 11868.4426526819. The cubic root of 140859931 is about 520.3103805299.

The spelling of 140859931 in words is "one hundred forty million, eight hundred fifty-nine thousand, nine hundred thirty-one".