31243412151211 has 8 divisors (see below), whose sum is σ = 33752892723984. Its totient is φ = 28749094603680.

The previous prime is 31243412151143. The next prime is 31243412151229. The reversal of 31243412151211 is 11215121434213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31243412151211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31243412155211) 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, 3790752025 + ... + 3790760266.

It is an arithmetic number, because the mean of its divisors is an integer number (4219111590498).

Almost surely, 2^{31243412151211} is an apocalyptic number.

31243412151211 is a deficient number, since it is larger than the sum of its proper divisors (2509480572773).

31243412151211 is a wasteful number, since it uses less digits than its factorization.

31243412151211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581512621.

The product of its digits is 5760, while the sum is 31.

Adding to 31243412151211 its reverse (11215121434213), we get a palindrome (42458533585424).

The spelling of 31243412151211 in words is "thirty-one trillion, two hundred forty-three billion, four hundred twelve million, one hundred fifty-one thousand, two hundred eleven".