351204431 has 4 divisors (see below), whose sum is σ = 354426600. Its totient is φ = 347982264.

The previous prime is 351204391. The next prime is 351204449. The reversal of 351204431 is 134402153.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 351204431 - 2¹⁸ = 350942287 is a prime.

It is a super-2 number, since 2×351204431² = 246689104708067522, 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 = 351204397 and 351204406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351204461) 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, 1610921 + ... + 1611138.

It is an arithmetic number, because the mean of its divisors is an integer number (88606650).

Almost surely, 2^351204431 is an apocalyptic number.

351204431 is a deficient number, since it is larger than the sum of its proper divisors (3222169).

351204431 is a wasteful number, since it uses less digits than its factorization.

351204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222168.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 351204431 is about 18740.4490607883. The cubic root of 351204431 is about 705.5373272310.

Adding to 351204431 its reverse (134402153), we get a palindrome (485606584).

The spelling of 351204431 in words is "three hundred fifty-one million, two hundred four thousand, four hundred thirty-one".