345621111 has 8 divisors (see below), whose sum is σ = 502721664. Its totient is φ = 209467320.

The previous prime is 345621079. The next prime is 345621167. The reversal of 345621111 is 111126543.

It is a happy number.

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

It is not a de Polignac number, because 345621111 - 2⁵ = 345621079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345621911) 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, 5236651 + ... + 5236716.

It is an arithmetic number, because the mean of its divisors is an integer number (62840208).

Almost surely, 2^345621111 is an apocalyptic number.

345621111 is a deficient number, since it is larger than the sum of its proper divisors (157100553).

345621111 is a wasteful number, since it uses less digits than its factorization.

345621111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10473381.

The product of its digits is 720, while the sum is 24.

The square root of 345621111 is about 18590.8878486209. The cubic root of 345621111 is about 701.7785459863.

Adding to 345621111 its reverse (111126543), we get a palindrome (456747654).

The spelling of 345621111 in words is "three hundred forty-five million, six hundred twenty-one thousand, one hundred eleven".