213283340531 has 2 divisors, whose sum is σ = 213283340532. Its totient is φ = 213283340530.

The previous prime is 213283340513. The next prime is 213283340551. The reversal of 213283340531 is 135043382312.

Together with previous prime (213283340513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213283340531 is a prime.

It is a super-2 number, since 2×213283340531² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 213283340491 and 213283340500.

It is not a weakly prime, because it can be changed into another prime (213283340551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106641670265 + 106641670266.

It is an arithmetic number, because the mean of its divisors is an integer number (106641670266).

Almost surely, 2^213283340531 is an apocalyptic number.

213283340531 is a deficient number, since it is larger than the sum of its proper divisors (1).

213283340531 is an equidigital number, since it uses as much as digits as its factorization.

213283340531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 213283340531 in words is "two hundred thirteen billion, two hundred eighty-three million, three hundred forty thousand, five hundred thirty-one".