140357931 has 8 divisors (see below), whose sum is σ = 213878784. Its totient is φ = 80204520.

The previous prime is 140357929. The next prime is 140357947. The reversal of 140357931 is 139753041.

140357931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 140357931 - 2¹ = 140357929 is a prime.

It is a super-2 number, since 2×140357931² = 39400697589201522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140357892 and 140357901.

It is not an unprimeable number, because it can be changed into a prime (140357981) 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, 3341835 + ... + 3341876.

It is an arithmetic number, because the mean of its divisors is an integer number (26734848).

Almost surely, 2^140357931 is an apocalyptic number.

140357931 is a deficient number, since it is larger than the sum of its proper divisors (73520853).

140357931 is an equidigital number, since it uses as much as digits as its factorization.

140357931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6683721.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 140357931 is about 11847.2752563617. The cubic root of 140357931 is about 519.6915466044.

The spelling of 140357931 in words is "one hundred forty million, three hundred fifty-seven thousand, nine hundred thirty-one".