31231302222343 has 2 divisors, whose sum is σ = 31231302222344. Its totient is φ = 31231302222342.

The previous prime is 31231302222293. The next prime is 31231302222353. The reversal of 31231302222343 is 34322220313213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31231302222343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231302222353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615651111171 + 15615651111172.

It is an arithmetic number, because the mean of its divisors is an integer number (15615651111172).

Almost surely, 2^{31231302222343} is an apocalyptic number.

31231302222343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231302222343 is an equidigital number, since it uses as much as digits as its factorization.

31231302222343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 31231302222343 its reverse (34322220313213), we get a palindrome (65553522535556).

The spelling of 31231302222343 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred two million, two hundred twenty-two thousand, three hundred forty-three".