343451421 has 20 divisors (see below), whose sum is σ = 513624672. Its totient is φ = 228714408.

The previous prime is 343451389. The next prime is 343451441. The reversal of 343451421 is 124154343.

It is a happy number.

It is not a de Polignac number, because 343451421 - 2⁵ = 343451389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343451441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 97330 + ... + 100796.

Almost surely, 2^343451421 is an apocalyptic number.

It is an amenable number.

343451421 is a deficient number, since it is larger than the sum of its proper divisors (170173251).

343451421 is a wasteful number, since it uses less digits than its factorization.

343451421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702 (or 4693 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 343451421 is about 18532.4423916547. The cubic root of 343451421 is about 700.3069544945.

The spelling of 343451421 in words is "three hundred forty-three million, four hundred fifty-one thousand, four hundred twenty-one".