213312004397 has 2 divisors, whose sum is σ = 213312004398. Its totient is φ = 213312004396.

The previous prime is 213312004393. The next prime is 213312004417. The reversal of 213312004397 is 793400213312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190153556356 + 23158448041 = 436066^2 + 152179^2 .

It is a cyclic number.

It is not a de Polignac number, because 213312004397 - 2² = 213312004393 is a prime.

It is a super-2 number, since 2×213312004397² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213312004393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106656002198 + 106656002199.

It is an arithmetic number, because the mean of its divisors is an integer number (106656002199).

Almost surely, 2^213312004397 is an apocalyptic number.

It is an amenable number.

213312004397 is a deficient number, since it is larger than the sum of its proper divisors (1).

213312004397 is an equidigital number, since it uses as much as digits as its factorization.

213312004397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 213312004397 in words is "two hundred thirteen billion, three hundred twelve million, four thousand, three hundred ninety-seven".