1231005126 has 48 divisors (see below), whose sum is σ = 2781927936. Its totient is φ = 362295648.

The previous prime is 1231005107. The next prime is 1231005151. The reversal of 1231005126 is 6215001321.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3070 + ... + 49713.

It is an arithmetic number, because the mean of its divisors is an integer number (57956832).

Almost surely, 2^1231005126 is an apocalyptic number.

1231005126 is an abundant number, since it is smaller than the sum of its proper divisors (1550922810).

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

1231005126 is a wasteful number, since it uses less digits than its factorization.

1231005126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52837 (or 52824 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1231005126 is about 35085.6826355139. The cubic root of 1231005126 is about 1071.7330421197.

Adding to 1231005126 its reverse (6215001321), we get a palindrome (7446006447).

The spelling of 1231005126 in words is "one billion, two hundred thirty-one million, five thousand, one hundred twenty-six".