345531505 has 8 divisors (see below), whose sum is σ = 452332224. Its totient is φ = 251295600.

The previous prime is 345531503. The next prime is 345531523. The reversal of 345531505 is 505135543.

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

It is not a de Polignac number, because 345531505 - 2¹ = 345531503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345531503) 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, 3141141 + ... + 3141250.

It is an arithmetic number, because the mean of its divisors is an integer number (56541528).

Almost surely, 2^345531505 is an apocalyptic number.

It is an amenable number.

345531505 is a deficient number, since it is larger than the sum of its proper divisors (106800719).

345531505 is a wasteful number, since it uses less digits than its factorization.

345531505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282407.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 345531505 is about 18588.4777483257. The cubic root of 345531505 is about 701.7178928591.

The spelling of 345531505 in words is "three hundred forty-five million, five hundred thirty-one thousand, five hundred five".