303423431 has 4 divisors (see below), whose sum is σ = 306259272. Its totient is φ = 300587592.

The previous prime is 303423413. The next prime is 303423481. The reversal of 303423431 is 134324303.

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 303423431 - 2¹⁰ = 303422407 is a prime.

It is a super-2 number, since 2×303423431² = 184131556959623522, 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 = 303423397 and 303423406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303423401) 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, 1417760 + ... + 1417973.

It is an arithmetic number, because the mean of its divisors is an integer number (76564818).

Almost surely, 2^303423431 is an apocalyptic number.

303423431 is a deficient number, since it is larger than the sum of its proper divisors (2835841).

303423431 is a wasteful number, since it uses less digits than its factorization.

303423431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835840.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 303423431 is about 17419.0536769366. The cubic root of 303423431 is about 671.9697222458.

Adding to 303423431 its reverse (134324303), we get a palindrome (437747734).

The spelling of 303423431 in words is "three hundred three million, four hundred twenty-three thousand, four hundred thirty-one".