213031332131 has 2 divisors, whose sum is σ = 213031332132. Its totient is φ = 213031332130.

The previous prime is 213031332061. The next prime is 213031332223. The reversal of 213031332131 is 131233130312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213031332131 is a prime.

It is a super-2 number, since 2×213031332131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213031332097 and 213031332106.

It is not a weakly prime, because it can be changed into another prime (213031332431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106515666065 + 106515666066.

It is an arithmetic number, because the mean of its divisors is an integer number (106515666066).

Almost surely, 2^213031332131 is an apocalyptic number.

213031332131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213031332131 is an equidigital number, since it uses as much as digits as its factorization.

213031332131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 213031332131 its reverse (131233130312), we get a palindrome (344264462443).

The spelling of 213031332131 in words is "two hundred thirteen billion, thirty-one million, three hundred thirty-two thousand, one hundred thirty-one".