351243489 has 4 divisors (see below), whose sum is σ = 468324656. Its totient is φ = 234162324.

The previous prime is 351243439. The next prime is 351243491. The reversal of 351243489 is 984342153.

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, and also an emirpimes, since its reverse is a distinct semiprime: 984342153 = 3 ⋅328114051.

It is not a de Polignac number, because 351243489 - 2⁹ = 351242977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (351243439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58540579 + ... + 58540584.

It is an arithmetic number, because the mean of its divisors is an integer number (117081164).

Almost surely, 2^351243489 is an apocalyptic number.

It is an amenable number.

351243489 is a deficient number, since it is larger than the sum of its proper divisors (117081167).

351243489 is a wasteful number, since it uses less digits than its factorization.

351243489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117081166.

The product of its digits is 103680, while the sum is 39.

The square root of 351243489 is about 18741.4911093008. The cubic root of 351243489 is about 705.5634809020.

The spelling of 351243489 in words is "three hundred fifty-one million, two hundred forty-three thousand, four hundred eighty-nine".