1230434431 has 4 divisors (see below), whose sum is σ = 1248799192. Its totient is φ = 1212069672.

The previous prime is 1230434411. The next prime is 1230434437. The reversal of 1230434431 is 1344340321.

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 1230434431 - 2¹¹ = 1230432383 is a prime.

It is a super-2 number, since 2×1230434431² = 3027937777980587522, 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 = 1230434396 and 1230434405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230434437) 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, 9182280 + ... + 9182413.

It is an arithmetic number, because the mean of its divisors is an integer number (312199798).

Almost surely, 2^1230434431 is an apocalyptic number.

1230434431 is a deficient number, since it is larger than the sum of its proper divisors (18364761).

1230434431 is an equidigital number, since it uses as much as digits as its factorization.

1230434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18364760.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1230434431 is about 35077.5488168715. The cubic root of 1230434431 is about 1071.5673977430.

Adding to 1230434431 its reverse (1344340321), we get a palindrome (2574774752).

The spelling of 1230434431 in words is "one billion, two hundred thirty million, four hundred thirty-four thousand, four hundred thirty-one".