351313121523 has 48 divisors (see below), whose sum is σ = 582920997120. Its totient is φ = 184272446592.

The previous prime is 351313121521. The next prime is 351313121543. The reversal of 351313121523 is 325121313153.

It is not a de Polignac number, because 351313121523 - 2¹ = 351313121521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (351313121521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 358765 + ... + 911777.

It is an arithmetic number, because the mean of its divisors is an integer number (12144187440).

Almost surely, 2^351313121523 is an apocalyptic number.

351313121523 is a deficient number, since it is larger than the sum of its proper divisors (231607875597).

351313121523 is a wasteful number, since it uses less digits than its factorization.

351313121523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553228 (or 553215 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

Adding to 351313121523 its reverse (325121313153), we get a palindrome (676434434676).

The spelling of 351313121523 in words is "three hundred fifty-one billion, three hundred thirteen million, one hundred twenty-one thousand, five hundred twenty-three".