1233420431 has 16 divisors (see below), whose sum is σ = 1353607200. Its totient is φ = 1118681088.

The previous prime is 1233420401. The next prime is 1233420439. The reversal of 1233420431 is 1340243321.

It is a cyclic number.

It is not a de Polignac number, because 1233420431 - 2⁶ = 1233420367 is a prime.

It is a super-2 number, since 2×1233420431² = 3042651919216451522, 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 = 1233420397 and 1233420406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233420439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290240 + ... + 294458.

It is an arithmetic number, because the mean of its divisors is an integer number (84600450).

Almost surely, 2^1233420431 is an apocalyptic number.

1233420431 is a deficient number, since it is larger than the sum of its proper divisors (120186769).

1233420431 is a wasteful number, since it uses less digits than its factorization.

1233420431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1233420431 is about 35120.0858626513. The cubic root of 1233420431 is about 1072.4335187716.

Adding to 1233420431 its reverse (1340243321), we get a palindrome (2573663752).

The spelling of 1233420431 in words is "one billion, two hundred thirty-three million, four hundred twenty thousand, four hundred thirty-one".