213400312351 has 2 divisors, whose sum is σ = 213400312352. Its totient is φ = 213400312350.

The previous prime is 213400312291. The next prime is 213400312387. The reversal of 213400312351 is 153213004312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213400312351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213400310351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106700156175 + 106700156176.

It is an arithmetic number, because the mean of its divisors is an integer number (106700156176).

Almost surely, 2^213400312351 is an apocalyptic number.

213400312351 is a deficient number, since it is larger than the sum of its proper divisors (1).

213400312351 is an equidigital number, since it uses as much as digits as its factorization.

213400312351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 213400312351 its reverse (153213004312), we get a palindrome (366613316663).

The spelling of 213400312351 in words is "two hundred thirteen billion, four hundred million, three hundred twelve thousand, three hundred fifty-one".