345210813 has 6 divisors (see below), whose sum is σ = 498637854. Its totient is φ = 230140536.

The previous prime is 345210793. The next prime is 345210839. The reversal of 345210813 is 318012543.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 283147929 + 62062884 = 16827^2 + 7878^2 .

It is not a de Polignac number, because 345210813 - 2⁸ = 345210557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345210863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19178370 + ... + 19178387.

It is an arithmetic number, because the mean of its divisors is an integer number (83106309).

Almost surely, 2^345210813 is an apocalyptic number.

It is an amenable number.

345210813 is a deficient number, since it is larger than the sum of its proper divisors (153427041).

345210813 is a wasteful number, since it uses less digits than its factorization.

345210813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38356763 (or 38356760 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 345210813 is about 18579.8496495531. The cubic root of 345210813 is about 701.5007346873.

The spelling of 345210813 in words is "three hundred forty-five million, two hundred ten thousand, eight hundred thirteen".