345451331 has 4 divisors (see below), whose sum is σ = 363633000. Its totient is φ = 327269664.

The previous prime is 345451291. The next prime is 345451361. The reversal of 345451331 is 133154543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345451331 - 2¹⁰ = 345450307 is a prime.

It is a super-2 number, since 2×345451331² = 238673244179343122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345451294 and 345451303.

It is not an unprimeable number, because it can be changed into a prime (345451361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9090806 + ... + 9090843.

It is an arithmetic number, because the mean of its divisors is an integer number (90908250).

Almost surely, 2^345451331 is an apocalyptic number.

345451331 is a deficient number, since it is larger than the sum of its proper divisors (18181669).

345451331 is a wasteful number, since it uses less digits than its factorization.

345451331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18181668.

The product of its digits is 10800, while the sum is 29.

The square root of 345451331 is about 18586.3210722294. The cubic root of 345451331 is about 701.6636152400.

The spelling of 345451331 in words is "three hundred forty-five million, four hundred fifty-one thousand, three hundred thirty-one".