31231302230101 has 2 divisors, whose sum is σ = 31231302230102. Its totient is φ = 31231302230100.

The previous prime is 31231302230077. The next prime is 31231302230123. The reversal of 31231302230101 is 10103220313213.

It is an a-pointer prime, because the next prime (31231302230123) can be obtained adding 31231302230101 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21030937402500 + 10200364827601 = 4585950^2 + 3193801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31231302230101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231302237101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615651115050 + 15615651115051.

It is an arithmetic number, because the mean of its divisors is an integer number (15615651115051).

Almost surely, 2^{31231302230101} is an apocalyptic number.

It is an amenable number.

31231302230101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231302230101 is an equidigital number, since it uses as much as digits as its factorization.

31231302230101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31231302230101 its reverse (10103220313213), we get a palindrome (41334522543314).

The spelling of 31231302230101 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred two million, two hundred thirty thousand, one hundred one".