213031332061 has 2 divisors, whose sum is σ = 213031332062. Its totient is φ = 213031332060.

The previous prime is 213031331999. The next prime is 213031332131. The reversal of 213031332061 is 160233130312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139226743161 + 73804588900 = 373131^2 + 271670^2 .

It is a cyclic number.

It is not a de Polignac number, because 213031332061 - 2²⁷ = 212897114333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213031332361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106515666030 + 106515666031.

It is an arithmetic number, because the mean of its divisors is an integer number (106515666031).

Almost surely, 2^213031332061 is an apocalyptic number.

It is an amenable number.

213031332061 is a deficient number, since it is larger than the sum of its proper divisors (1).

213031332061 is an equidigital number, since it uses as much as digits as its factorization.

213031332061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 213031332061 its reverse (160233130312), we get a palindrome (373264462373).

The spelling of 213031332061 in words is "two hundred thirteen billion, thirty-one million, three hundred thirty-two thousand, sixty-one".