345503231 has 8 divisors (see below), whose sum is σ = 347073024. Its totient is φ = 343937880.

The previous prime is 345503219. The next prime is 345503267. The reversal of 345503231 is 132305543.

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 345503231 - 2²² = 341308927 is a prime.

It is a super-2 number, since 2×345503231² = 238744965262878722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345503231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345503281) 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, 348146 + ... + 349136.

It is an arithmetic number, because the mean of its divisors is an integer number (43384128).

Almost surely, 2^345503231 is an apocalyptic number.

345503231 is a deficient number, since it is larger than the sum of its proper divisors (1569793).

345503231 is an equidigital number, since it uses as much as digits as its factorization.

345503231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 345503231 is about 18587.7172078768. The cubic root of 345503231 is about 701.6987523827.

Adding to 345503231 its reverse (132305543), we get a palindrome (477808774).

The spelling of 345503231 in words is "three hundred forty-five million, five hundred three thousand, two hundred thirty-one".