213233043131 has 2 divisors, whose sum is σ = 213233043132. Its totient is φ = 213233043130.

The previous prime is 213233043073. The next prime is 213233043137. The reversal of 213233043131 is 131340332312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213233043131 - 2¹⁰ = 213233042107 is a prime.

It is a super-2 number, since 2×213233043131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213233043131.

It is not a weakly prime, because it can be changed into another prime (213233043137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106616521565 + 106616521566.

It is an arithmetic number, because the mean of its divisors is an integer number (106616521566).

Almost surely, 2^213233043131 is an apocalyptic number.

213233043131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213233043131 is an equidigital number, since it uses as much as digits as its factorization.

213233043131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 213233043131 its reverse (131340332312), we get a palindrome (344573375443).

The spelling of 213233043131 in words is "two hundred thirteen billion, two hundred thirty-three million, forty-three thousand, one hundred thirty-one".