351311431 has 8 divisors (see below), whose sum is σ = 355261104. Its totient is φ = 347371200.

The previous prime is 351311393. The next prime is 351311447. The reversal of 351311431 is 134113153.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 351311431 - 2¹⁵ = 351278663 is a prime.

It is a super-2 number, since 2×351311431² = 246839443102535522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351311461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93811 + ... + 97483.

It is an arithmetic number, because the mean of its divisors is an integer number (44407638).

Almost surely, 2^351311431 is an apocalyptic number.

351311431 is a deficient number, since it is larger than the sum of its proper divisors (3949673).

351311431 is a wasteful number, since it uses less digits than its factorization.

351311431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721.

The product of its digits is 540, while the sum is 22.

The square root of 351311431 is about 18743.3036308971. The cubic root of 351311431 is about 705.6089710012.

Adding to 351311431 its reverse (134113153), we get a palindrome (485424584).

The spelling of 351311431 in words is "three hundred fifty-one million, three hundred eleven thousand, four hundred thirty-one".