353220431 has 4 divisors (see below), whose sum is σ = 371811000. Its totient is φ = 334629864.

The previous prime is 353220421. The next prime is 353220437. The reversal of 353220431 is 134022353.

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

It is a cyclic number.

It is not a de Polignac number, because 353220431 - 2⁶ = 353220367 is a prime.

It is a super-2 number, since 2×353220431² = 249529345751651522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 353220397 and 353220406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353220437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9295256 + ... + 9295293.

It is an arithmetic number, because the mean of its divisors is an integer number (92952750).

Almost surely, 2^353220431 is an apocalyptic number.

353220431 is a deficient number, since it is larger than the sum of its proper divisors (18590569).

353220431 is a wasteful number, since it uses less digits than its factorization.

353220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18590568.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 353220431 is about 18794.1594917144. The cubic root of 353220431 is about 706.8847384067.

Adding to 353220431 its reverse (134022353), we get a palindrome (487242784).

The spelling of 353220431 in words is "three hundred fifty-three million, two hundred twenty thousand, four hundred thirty-one".