351399913 has 4 divisors (see below), whose sum is σ = 359572048. Its totient is φ = 343227780.

The previous prime is 351399901. The next prime is 351399947. The reversal of 351399913 is 319993153.

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: 319993153 = 109 ⋅2935717.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351399913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 8172091 = 351399913 / (3 + 5 + 1 + 3 + 9 + 9 + 9 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351399913.

It is not an unprimeable number, because it can be changed into a prime (351399953) 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, 4086003 + ... + 4086088.

It is an arithmetic number, because the mean of its divisors is an integer number (89893012).

Almost surely, 2^351399913 is an apocalyptic number.

It is an amenable number.

351399913 is a deficient number, since it is larger than the sum of its proper divisors (8172135).

351399913 is an equidigital number, since it uses as much as digits as its factorization.

351399913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8172134.

The product of its digits is 98415, while the sum is 43.

The square root of 351399913 is about 18745.6638452737. The cubic root of 351399913 is about 705.6682047243.

The spelling of 351399913 in words is "three hundred fifty-one million, three hundred ninety-nine thousand, nine hundred thirteen".