31240330111241 has 4 divisors (see below), whose sum is σ = 31361887816212. Its totient is φ = 31118772406272.

The previous prime is 31240330111219. The next prime is 31240330111273. The reversal of 31240330111241 is 14211103304213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30068816118016 + 1171513993225 = 5483504^2 + 1082365^2 .

It is a cyclic number.

It is not a de Polignac number, because 31240330111241 - 2¹⁰ = 31240330110217 is a prime.

It is a super-2 number, since 2×31240330111241² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31240330111241.

It is not an unprimeable number, because it can be changed into a prime (31240330114241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60778852100 + ... + 60778852613.

It is an arithmetic number, because the mean of its divisors is an integer number (7840471954053).

Almost surely, 2^{31240330111241} is an apocalyptic number.

It is an amenable number.

31240330111241 is a deficient number, since it is larger than the sum of its proper divisors (121557704971).

31240330111241 is a wasteful number, since it uses less digits than its factorization.

31240330111241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121557704970.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31240330111241 its reverse (14211103304213), we get a palindrome (45451433415454).

The spelling of 31240330111241 in words is "thirty-one trillion, two hundred forty billion, three hundred thirty million, one hundred eleven thousand, two hundred forty-one".