351403331 has 4 divisors (see below), whose sum is σ = 351619632. Its totient is φ = 351187032.

The previous prime is 351403291. The next prime is 351403337. The reversal of 351403331 is 133304153.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133304153 = 127 ⋅1049639.

It is a cyclic number.

It is not a de Polignac number, because 351403331 - 2¹⁸ = 351141187 is a prime.

It is a super-2 number, since 2×351403331² = 246968602075791122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 351403297 and 351403306.

It is not an unprimeable number, because it can be changed into a prime (351403337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105695 + ... + 108968.

It is an arithmetic number, because the mean of its divisors is an integer number (87904908).

Almost surely, 2^351403331 is an apocalyptic number.

351403331 is a deficient number, since it is larger than the sum of its proper divisors (216301).

351403331 is a wasteful number, since it uses less digits than its factorization.

351403331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216300.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 351403331 is about 18745.7550128022. The cubic root of 351403331 is about 705.6704926836.

Adding to 351403331 its reverse (133304153), we get a palindrome (484707484).

The spelling of 351403331 in words is "three hundred fifty-one million, four hundred three thousand, three hundred thirty-one".