351312223 has 4 divisors (see below), whose sum is σ = 369802360. Its totient is φ = 332822088.

The previous prime is 351312217. The next prime is 351312253. The reversal of 351312223 is 322213153.

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

It is not a de Polignac number, because 351312223 - 2¹⁷ = 351181151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 351312194 and 351312203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351312253) 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, 9245040 + ... + 9245077.

It is an arithmetic number, because the mean of its divisors is an integer number (92450590).

Almost surely, 2^351312223 is an apocalyptic number.

351312223 is a deficient number, since it is larger than the sum of its proper divisors (18490137).

351312223 is a wasteful number, since it uses less digits than its factorization.

351312223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18490136.

The product of its digits is 1080, while the sum is 22.

The square root of 351312223 is about 18743.3247584307. The cubic root of 351312223 is about 705.6095012447.

Adding to 351312223 its reverse (322213153), we get a palindrome (673525376).

The spelling of 351312223 in words is "three hundred fifty-one million, three hundred twelve thousand, two hundred twenty-three".