1231603412 has 12 divisors (see below), whose sum is σ = 2321098836. Its totient is φ = 568432320.

The previous prime is 1231603411. The next prime is 1231603511. The reversal of 1231603412 is 2143061321.

It can be written as a sum of positive squares in 2 ways, for example, as 729216016 + 502387396 = 27004^2 + 22414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231603411) 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, 11842289 + ... + 11842392.

It is an arithmetic number, because the mean of its divisors is an integer number (193424903).

Almost surely, 2^1231603412 is an apocalyptic number.

It is an amenable number.

1231603412 is a deficient number, since it is larger than the sum of its proper divisors (1089495424).

1231603412 is a wasteful number, since it uses less digits than its factorization.

1231603412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23684698 (or 23684696 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1231603412 is about 35094.2076702125. The cubic root of 1231603412 is about 1071.9066398331.

Adding to 1231603412 its reverse (2143061321), we get a palindrome (3374664733).

The spelling of 1231603412 in words is "one billion, two hundred thirty-one million, six hundred three thousand, four hundred twelve".