343021413 has 24 divisors (see below), whose sum is σ = 546421152. Its totient is φ = 190711584.

The previous prime is 343021411. The next prime is 343021423. The reversal of 343021413 is 314120343.

It is not a de Polignac number, because 343021413 - 2¹ = 343021411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 343021413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343021411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26095 + ... + 36972.

It is an arithmetic number, because the mean of its divisors is an integer number (22767548).

Almost surely, 2^343021413 is an apocalyptic number.

It is an amenable number.

343021413 is a deficient number, since it is larger than the sum of its proper divisors (203399739).

343021413 is a wasteful number, since it uses less digits than its factorization.

343021413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63121 (or 63114 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 343021413 is about 18520.8372650914. The cubic root of 343021413 is about 700.0145663636.

Adding to 343021413 its reverse (314120343), we get a palindrome (657141756).

The spelling of 343021413 in words is "three hundred forty-three million, twenty-one thousand, four hundred thirteen".