1231323004 has 12 divisors (see below), whose sum is σ = 2159726800. Its totient is φ = 614258208.

The previous prime is 1231322999. The next prime is 1231323019. The reversal of 1231323004 is 4003231321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348849 + ... + 352360.

Almost surely, 2^1231323004 is an apocalyptic number.

It is an amenable number.

1231323004 is a deficient number, since it is larger than the sum of its proper divisors (928403796).

1231323004 is a wasteful number, since it uses less digits than its factorization.

1231323004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701652 (or 701650 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1231323004 is about 35090.2123675534. The cubic root of 1231323004 is about 1071.8252840957.

Adding to 1231323004 its reverse (4003231321), we get a palindrome (5234554325).

The spelling of 1231323004 in words is "one billion, two hundred thirty-one million, three hundred twenty-three thousand, four".