353356421 has 12 divisors (see below), whose sum is σ = 393880032. Its totient is φ = 316701000.

The previous prime is 353356417. The next prime is 353356447. The reversal of 353356421 is 124653353.

It is not a de Polignac number, because 353356421 - 2² = 353356417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353356411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11975 + ... + 29156.

It is an arithmetic number, because the mean of its divisors is an integer number (32823336).

Almost surely, 2^353356421 is an apocalyptic number.

It is an amenable number.

353356421 is a deficient number, since it is larger than the sum of its proper divisors (40523611).

353356421 is a wasteful number, since it uses less digits than its factorization.

353356421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41224 (or 41213 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

The square root of 353356421 is about 18797.7770228291. Note that the first 3 decimals coincide. The cubic root of 353356421 is about 706.9754437314.

The spelling of 353356421 in words is "three hundred fifty-three million, three hundred fifty-six thousand, four hundred twenty-one".