351111421 has 8 divisors (see below), whose sum is σ = 373636800. Its totient is φ = 328794048.

The previous prime is 351111407. The next prime is 351111457. The reversal of 351111421 is 124111153.

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 351111421 - 2¹¹ = 351109373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351111461) 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 7 ways as a sum of consecutive naturals, for example, 48511 + ... + 55276.

It is an arithmetic number, because the mean of its divisors is an integer number (46704600).

Almost surely, 2^351111421 is an apocalyptic number.

It is an amenable number.

351111421 is a deficient number, since it is larger than the sum of its proper divisors (22525379).

351111421 is a wasteful number, since it uses less digits than its factorization.

351111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104003.

The product of its digits is 120, while the sum is 19.

The square root of 351111421 is about 18737.9673657523. The cubic root of 351111421 is about 705.4750388933.

Adding to 351111421 its reverse (124111153), we get a palindrome (475222574).

The spelling of 351111421 in words is "three hundred fifty-one million, one hundred eleven thousand, four hundred twenty-one".