346813589021 has 2 divisors, whose sum is σ = 346813589022. Its totient is φ = 346813589020.

The previous prime is 346813588981. The next prime is 346813589041. The reversal of 346813589021 is 120985318643.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341890461796 + 4923127225 = 584714^2 + 70165^2 .

It is a cyclic number.

It is not a de Polignac number, because 346813589021 - 2³⁴ = 329633719837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346813589041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173406794510 + 173406794511.

It is an arithmetic number, because the mean of its divisors is an integer number (173406794511).

Almost surely, 2^346813589021 is an apocalyptic number.

It is an amenable number.

346813589021 is a deficient number, since it is larger than the sum of its proper divisors (1).

346813589021 is an equidigital number, since it uses as much as digits as its factorization.

346813589021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 346813589021 in words is "three hundred forty-six billion, eight hundred thirteen million, five hundred eighty-nine thousand, twenty-one".