213130031031101 has 2 divisors, whose sum is σ = 213130031031102. Its totient is φ = 213130031031100.

The previous prime is 213130031030999. The next prime is 213130031031109. The reversal of 213130031031101 is 101130130031312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185213073708601 + 27916957322500 = 13609301^2 + 5283650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213130031031101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213130031031109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106565015515550 + 106565015515551.

It is an arithmetic number, because the mean of its divisors is an integer number (106565015515551).

Almost surely, 2^{213130031031101} is an apocalyptic number.

It is an amenable number.

213130031031101 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130031031101 is an equidigital number, since it uses as much as digits as its factorization.

213130031031101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 213130031031101 its reverse (101130130031312), we get a palindrome (314260161062413).

The spelling of 213130031031101 in words is "two hundred thirteen trillion, one hundred thirty billion, thirty-one million, thirty-one thousand, one hundred one".