343322451991 has 2 divisors, whose sum is σ = 343322451992. Its totient is φ = 343322451990.

The previous prime is 343322451973. The next prime is 343322452021. The reversal of 343322451991 is 199154223343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343322451991 - 2⁵ = 343322451959 is a prime.

It is a super-2 number, since 2×343322451991² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343322451971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171661225995 + 171661225996.

It is an arithmetic number, because the mean of its divisors is an integer number (171661225996).

Almost surely, 2^343322451991 is an apocalyptic number.

343322451991 is a deficient number, since it is larger than the sum of its proper divisors (1).

343322451991 is an equidigital number, since it uses as much as digits as its factorization.

343322451991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 46.

The spelling of 343322451991 in words is "three hundred forty-three billion, three hundred twenty-two million, four hundred fifty-one thousand, nine hundred ninety-one".