1231404441 has 8 divisors (see below), whose sum is σ = 1642382304. Its totient is φ = 820681440.

The previous prime is 1231404431. The next prime is 1231404443. The reversal of 1231404441 is 1444041321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231404441 - 2¹⁹ = 1230880153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231404443) 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 7 ways as a sum of consecutive naturals, for example, 52140 + ... + 71981.

It is an arithmetic number, because the mean of its divisors is an integer number (205297788).

Almost surely, 2^1231404441 is an apocalyptic number.

It is an amenable number.

1231404441 is a deficient number, since it is larger than the sum of its proper divisors (410977863).

1231404441 is a wasteful number, since it uses less digits than its factorization.

1231404441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127431.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1231404441 is about 35091.3727431687. The cubic root of 1231404441 is about 1071.8489129652.

Adding to 1231404441 its reverse (1444041321), we get a palindrome (2675445762).

The spelling of 1231404441 in words is "one billion, two hundred thirty-one million, four hundred four thousand, four hundred forty-one".