213090334631947 has 2 divisors, whose sum is σ = 213090334631948. Its totient is φ = 213090334631946.

The previous prime is 213090334631939. The next prime is 213090334632037. The reversal of 213090334631947 is 749136433090312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213090334631947 - 2³ = 213090334631939 is a prime.

It is not a weakly prime, because it can be changed into another prime (213090134631947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106545167315973 + 106545167315974.

It is an arithmetic number, because the mean of its divisors is an integer number (106545167315974).

Almost surely, 2^{213090334631947} is an apocalyptic number.

213090334631947 is a deficient number, since it is larger than the sum of its proper divisors (1).

213090334631947 is an equidigital number, since it uses as much as digits as its factorization.

213090334631947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8817984, while the sum is 55.

The spelling of 213090334631947 in words is "two hundred thirteen trillion, ninety billion, three hundred thirty-four million, six hundred thirty-one thousand, nine hundred forty-seven".