345005440331 has 4 divisors (see below), whose sum is σ = 345008953392. Its totient is φ = 345001927272.

The previous prime is 345005440321. The next prime is 345005440337. The reversal of 345005440331 is 133044500543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133044500543 = 267229 ⋅497867.

It is a cyclic number.

It is not a de Polignac number, because 345005440331 - 2⁶ = 345005440267 is a prime.

It is a super-2 number, since 2×345005440331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345005440337) 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, 1604855 + ... + 1807088.

It is an arithmetic number, because the mean of its divisors is an integer number (86252238348).

Almost surely, 2^345005440331 is an apocalyptic number.

345005440331 is a deficient number, since it is larger than the sum of its proper divisors (3513061).

345005440331 is a wasteful number, since it uses less digits than its factorization.

345005440331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513060.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 345005440331 its reverse (133044500543), we get a palindrome (478049940874).

The spelling of 345005440331 in words is "three hundred forty-five billion, five million, four hundred forty thousand, three hundred thirty-one".