345523401 has 28 divisors (see below), whose sum is σ = 521688900. Its totient is φ = 228731040.

The previous prime is 345523397. The next prime is 345523403. The reversal of 345523401 is 104325543.

It can be written as a sum of positive squares in 2 ways, for example, as 32764176 + 312759225 = 5724^2 + 17685^2 .

It is not a de Polignac number, because 345523401 - 2² = 345523397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (345523403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 107031 + ... + 110211.

Almost surely, 2^345523401 is an apocalyptic number.

It is an amenable number.

345523401 is a deficient number, since it is larger than the sum of its proper divisors (176165499).

345523401 is an equidigital number, since it uses as much as digits as its factorization.

345523401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348 (or 3333 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 345523401 is about 18588.2597625490. The cubic root of 345523401 is about 701.7124068507.

Adding to 345523401 its reverse (104325543), we get a palindrome (449848944).

The spelling of 345523401 in words is "three hundred forty-five million, five hundred twenty-three thousand, four hundred one".