1243230461 has 4 divisors (see below), whose sum is σ = 1356251424. Its totient is φ = 1130209500.

The previous prime is 1243230437. The next prime is 1243230463. The reversal of 1243230461 is 1640323421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1243230461 - 2³⁰ = 169488637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1243230461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243230463) 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, 56510465 + ... + 56510486.

It is an arithmetic number, because the mean of its divisors is an integer number (339062856).

Almost surely, 2^1243230461 is an apocalyptic number.

1243230461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1243230461 is a deficient number, since it is larger than the sum of its proper divisors (113020963).

1243230461 is a wasteful number, since it uses less digits than its factorization.

1243230461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113020962.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1243230461 is about 35259.4733511435. The cubic root of 1243230461 is about 1075.2692200423.

Adding to 1243230461 its reverse (1640323421), we get a palindrome (2883553882).

The spelling of 1243230461 in words is "one billion, two hundred forty-three million, two hundred thirty thousand, four hundred sixty-one".