345341021 has 8 divisors (see below), whose sum is σ = 363109824. Its totient is φ = 327801760.

The previous prime is 345341011. The next prime is 345341053. The reversal of 345341021 is 120143543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345341021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345341011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54296 + ... + 60321.

It is an arithmetic number, because the mean of its divisors is an integer number (45388728).

Almost surely, 2^345341021 is an apocalyptic number.

It is an amenable number.

345341021 is a deficient number, since it is larger than the sum of its proper divisors (17768803).

345341021 is a wasteful number, since it uses less digits than its factorization.

345341021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114771.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 345341021 is about 18583.3533303330. The cubic root of 345341021 is about 701.5889218882.

Adding to 345341021 its reverse (120143543), we get a palindrome (465484564).

The spelling of 345341021 in words is "three hundred forty-five million, three hundred forty-one thousand, twenty-one".