351743421 has 4 divisors (see below), whose sum is σ = 468991232. Its totient is φ = 234495612.

The previous prime is 351743411. The next prime is 351743429. The reversal of 351743421 is 124347153.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 351743421 - 2⁵ = 351743389 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 (351743429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58623901 + ... + 58623906.

It is an arithmetic number, because the mean of its divisors is an integer number (117247808).

Almost surely, 2^351743421 is an apocalyptic number.

It is an amenable number.

351743421 is a deficient number, since it is larger than the sum of its proper divisors (117247811).

351743421 is a wasteful number, since it uses less digits than its factorization.

351743421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117247810.

The product of its digits is 10080, while the sum is 30.

The square root of 351743421 is about 18754.8239394562. The cubic root of 351743421 is about 705.8980698261.

The spelling of 351743421 in words is "three hundred fifty-one million, seven hundred forty-three thousand, four hundred twenty-one".