213012333031 has 2 divisors, whose sum is σ = 213012333032. Its totient is φ = 213012333030.

The previous prime is 213012333013. The next prime is 213012333043. The reversal of 213012333031 is 130333210312.

Together with previous prime (213012333013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213012333031 - 2⁷ = 213012332903 is a prime.

It is a super-2 number, since 2×213012333031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213012332993 and 213012333011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213012433031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106506166515 + 106506166516.

It is an arithmetic number, because the mean of its divisors is an integer number (106506166516).

Almost surely, 2^213012333031 is an apocalyptic number.

213012333031 is a deficient number, since it is larger than the sum of its proper divisors (1).

213012333031 is an equidigital number, since it uses as much as digits as its factorization.

213012333031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 213012333031 its reverse (130333210312), we get a palindrome (343345543343).

The spelling of 213012333031 in words is "two hundred thirteen billion, twelve million, three hundred thirty-three thousand, thirty-one".