31241243013 has 16 divisors (see below), whose sum is σ = 41946952320. Its totient is φ = 20681683776.

The previous prime is 31241242979. The next prime is 31241243021. The reversal of 31241243013 is 31034214213.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-31241243013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31241243063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750768 + ... + 791286.

It is an arithmetic number, because the mean of its divisors is an integer number (2621684520).

Almost surely, 2^31241243013 is an apocalyptic number.

It is an amenable number.

31241243013 is a deficient number, since it is larger than the sum of its proper divisors (10705709307).

31241243013 is a wasteful number, since it uses less digits than its factorization.

31241243013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42316.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31241243013 its reverse (31034214213), we get a palindrome (62275457226).

The spelling of 31241243013 in words is "thirty-one billion, two hundred forty-one million, two hundred forty-three thousand, thirteen".