140041931 has 2 divisors, whose sum is σ = 140041932. Its totient is φ = 140041930.

The previous prime is 140041897. The next prime is 140041933. The reversal of 140041931 is 139140041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140041931 is a prime.

It is a super-2 number, since 2×140041931² = 39223484876417522, which contains 22 as substring.

Together with 140041933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140041897 and 140041906.

It is not a weakly prime, because it can be changed into another prime (140041933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70020965 + 70020966.

It is an arithmetic number, because the mean of its divisors is an integer number (70020966).

Almost surely, 2^140041931 is an apocalyptic number.

140041931 is a deficient number, since it is larger than the sum of its proper divisors (1).

140041931 is an equidigital number, since it uses as much as digits as its factorization.

140041931 is an odious number, because the sum of its binary digits is odd.

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

The square root of 140041931 is about 11833.9313416971. The cubic root of 140041931 is about 519.3012446463.

Adding to 140041931 its reverse (139140041), we get a palindrome (279181972).

The spelling of 140041931 in words is "one hundred forty million, forty-one thousand, nine hundred thirty-one".