345404323231 has 8 divisors (see below), whose sum is σ = 376856371584. Its totient is φ = 313960884120.

The previous prime is 345404323219. The next prime is 345404323237. The reversal of 345404323231 is 132323404543.

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

It is a cyclic number.

It is not a de Polignac number, because 345404323231 - 2³³ = 336814388639 is a prime.

It is a super-2 number, since 2×345404323231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345404323237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068275 + ... + 2229028.

It is an arithmetic number, because the mean of its divisors is an integer number (47107046448).

Almost surely, 2^345404323231 is an apocalyptic number.

345404323231 is a deficient number, since it is larger than the sum of its proper divisors (31452048353).

345404323231 is a wasteful number, since it uses less digits than its factorization.

345404323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304621.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 345404323231 its reverse (132323404543), we get a palindrome (477727727774).

The spelling of 345404323231 in words is "three hundred forty-five billion, four hundred four million, three hundred twenty-three thousand, two hundred thirty-one".