1232403431 has 4 divisors (see below), whose sum is σ = 1408461072. Its totient is φ = 1056345792.

The previous prime is 1232403413. The next prime is 1232403439. The reversal of 1232403431 is 1343042321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343042321 = 683 ⋅1966387.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232403431 is a prime.

It is a super-2 number, since 2×1232403431² = 3037636433481143522, 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 = 1232403397 and 1232403406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232403439) 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, 88028810 + ... + 88028823.

It is an arithmetic number, because the mean of its divisors is an integer number (352115268).

Almost surely, 2^1232403431 is an apocalyptic number.

1232403431 is a deficient number, since it is larger than the sum of its proper divisors (176057641).

1232403431 is an equidigital number, since it uses as much as digits as its factorization.

1232403431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176057640.

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

The square root of 1232403431 is about 35105.6039828401. The cubic root of 1232403431 is about 1072.1386842441.

Adding to 1232403431 its reverse (1343042321), we get a palindrome (2575445752).

The spelling of 1232403431 in words is "one billion, two hundred thirty-two million, four hundred three thousand, four hundred thirty-one".