31140140241 has 8 divisors (see below), whose sum is σ = 47451642304. Its totient is φ = 17794365840.

The previous prime is 31140140237. The next prime is 31140140299. The reversal of 31140140241 is 14204104113.

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

It is not a de Polignac number, because 31140140241 - 2² = 31140140237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1482863821 = 31140140241 / (3 + 1 + 1 + 4 + 0 + 1 + 4 + 0 + 2 + 4 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31140140341) 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, 741431890 + ... + 741431931.

It is an arithmetic number, because the mean of its divisors is an integer number (5931455288).

Almost surely, 2^31140140241 is an apocalyptic number.

It is an amenable number.

31140140241 is a deficient number, since it is larger than the sum of its proper divisors (16311502063).

31140140241 is a wasteful number, since it uses less digits than its factorization.

31140140241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482863831.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 31140140241 its reverse (14204104113), we get a palindrome (45344244354).

The spelling of 31140140241 in words is "thirty-one billion, one hundred forty million, one hundred forty thousand, two hundred forty-one".