31240204113 has 8 divisors (see below), whose sum is σ = 41677292800. Its totient is φ = 20814959088.

The previous prime is 31240204097. The next prime is 31240204129. The reversal of 31240204113 is 31140204213.

It is an interprime number because it is at equal distance from previous prime (31240204097) and next prime (31240204129).

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

It is not a de Polignac number, because 31240204113 - 2⁴ = 31240204097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31240204113.

It is not an unprimeable number, because it can be changed into a prime (31240204133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2954758 + ... + 2965311.

It is an arithmetic number, because the mean of its divisors is an integer number (5209661600).

Almost surely, 2^31240204113 is an apocalyptic number.

It is an amenable number.

31240204113 is a deficient number, since it is larger than the sum of its proper divisors (10437088687).

31240204113 is a wasteful number, since it uses less digits than its factorization.

31240204113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921831.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31240204113 its reverse (31140204213), we get a palindrome (62380408326).

The spelling of 31240204113 in words is "thirty-one billion, two hundred forty million, two hundred four thousand, one hundred thirteen".