31214144422231 has 2 divisors, whose sum is σ = 31214144422232. Its totient is φ = 31214144422230.

The previous prime is 31214144422229. The next prime is 31214144422249. The reversal of 31214144422231 is 13222444141213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31214144422231 - 2¹ = 31214144422229 is a prime.

It is a super-2 number, since 2×31214144422231² (a number of 28 digits) contains 22 as substring.

Together with 31214144422229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31214144422031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15607072211115 + 15607072211116.

It is an arithmetic number, because the mean of its divisors is an integer number (15607072211116).

Almost surely, 2^{31214144422231} is an apocalyptic number.

31214144422231 is a deficient number, since it is larger than the sum of its proper divisors (1).

31214144422231 is an equidigital number, since it uses as much as digits as its factorization.

31214144422231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 34.

Adding to 31214144422231 its reverse (13222444141213), we get a palindrome (44436588563444).

The spelling of 31214144422231 in words is "thirty-one trillion, two hundred fourteen billion, one hundred forty-four million, four hundred twenty-two thousand, two hundred thirty-one".