140104931 has 4 divisors (see below), whose sum is σ = 140269272. Its totient is φ = 139940592.

The previous prime is 140104927. The next prime is 140104933. The reversal of 140104931 is 139401041.

140104931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139401041 = 13 ⋅10723157.

It is a cyclic number.

It is not a de Polignac number, because 140104931 - 2² = 140104927 is a prime.

It is a super-2 number, since 2×140104931² = 39258783381029522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140104897 and 140104906.

It is not an unprimeable number, because it can be changed into a prime (140104933) 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, 80885 + ... + 82598.

It is an arithmetic number, because the mean of its divisors is an integer number (35067318).

Almost surely, 2^140104931 is an apocalyptic number.

140104931 is a deficient number, since it is larger than the sum of its proper divisors (164341).

140104931 is an equidigital number, since it uses as much as digits as its factorization.

140104931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164340.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 140104931 is about 11836.5928797099. The cubic root of 140104931 is about 519.3791048354.

Adding to 140104931 its reverse (139401041), we get a palindrome (279505972).

The spelling of 140104931 in words is "one hundred forty million, one hundred four thousand, nine hundred thirty-one".