1231424404 has 24 divisors (see below), whose sum is σ = 2470785408. Its totient is φ = 526052640.

The previous prime is 1231424399. The next prime is 1231424473. The reversal of 1231424404 is 4044241321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61999 + ... + 79414.

It is an arithmetic number, because the mean of its divisors is an integer number (102949392).

Almost surely, 2^1231424404 is an apocalyptic number.

1231424404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1231424404 is an abundant number, since it is smaller than the sum of its proper divisors (1239361004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231424404 is a wasteful number, since it uses less digits than its factorization.

1231424404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141735 (or 141733 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1231424404 is about 35091.6571851487. The cubic root of 1231424404 is about 1071.8547050520.

Adding to 1231424404 its reverse (4044241321), we get a palindrome (5275665725).

The spelling of 1231424404 in words is "one billion, two hundred thirty-one million, four hundred twenty-four thousand, four hundred four".