213031332361 has 2 divisors, whose sum is σ = 213031332362. Its totient is φ = 213031332360.

The previous prime is 213031332341. The next prime is 213031332421. The reversal of 213031332361 is 163233130312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210698442361 + 2332890000 = 459019^2 + 48300^2 .

It is a cyclic number.

It is not a de Polignac number, because 213031332361 - 2⁷ = 213031332233 is a prime.

It is not a weakly prime, because it can be changed into another prime (213031332301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106515666180 + 106515666181.

It is an arithmetic number, because the mean of its divisors is an integer number (106515666181).

Almost surely, 2^213031332361 is an apocalyptic number.

It is an amenable number.

213031332361 is a deficient number, since it is larger than the sum of its proper divisors (1).

213031332361 is an equidigital number, since it uses as much as digits as its factorization.

213031332361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 213031332361 its reverse (163233130312), we get a palindrome (376264462673).

The spelling of 213031332361 in words is "two hundred thirteen billion, thirty-one million, three hundred thirty-two thousand, three hundred sixty-one".