140031131 has 4 divisors (see below), whose sum is σ = 142404600. Its totient is φ = 137657664.

The previous prime is 140031127. The next prime is 140031137. The reversal of 140031131 is 131130041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140031131 - 2² = 140031127 is a prime.

It is a super-2 number, since 2×140031131² = 39217435298278322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140031137) 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 3 ways as a sum of consecutive naturals, for example, 1186646 + ... + 1186763.

It is an arithmetic number, because the mean of its divisors is an integer number (35601150).

Almost surely, 2^140031131 is an apocalyptic number.

140031131 is a deficient number, since it is larger than the sum of its proper divisors (2373469).

140031131 is an equidigital number, since it uses as much as digits as its factorization.

140031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373468.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 140031131 is about 11833.4750179311. The cubic root of 140031131 is about 519.2878948408.

Adding to 140031131 its reverse (131130041), we get a palindrome (271161172).

The spelling of 140031131 in words is "one hundred forty million, thirty-one thousand, one hundred thirty-one".