31140141 has 32 divisors (see below), whose sum is σ = 45619200. Its totient is φ = 18819840.

The previous prime is 31140077. The next prime is 31140157. The reversal of 31140141 is 14104113.

It is not a de Polignac number, because 31140141 - 2⁶ = 31140077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31140141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31140191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237646 + ... + 237776.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^31140141 is an apocalyptic number.

It is an amenable number.

31140141 is a deficient number, since it is larger than the sum of its proper divisors (14479059).

31140141 is a wasteful number, since it uses less digits than its factorization.

31140141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 31140141 is about 5580.3352049854. The cubic root of 31140141 is about 314.6107259901.

Adding to 31140141 its reverse (14104113), we get a palindrome (45244254).

The spelling of 31140141 in words is "thirty-one million, one hundred forty thousand, one hundred forty-one".