1231532244125 has 8 divisors (see below), whose sum is σ = 1536952240824. Its totient is φ = 985225795200.

The previous prime is 1231532244109. The next prime is 1231532244149. The reversal of 1231532244125 is 5214422351321.

It can be written as a sum of positive squares in 4 ways, for example, as 125682303289 + 1105849940836 = 354517^2 + 1051594^2 .

It is not a de Polignac number, because 1231532244125 - 2⁴ = 1231532244109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4926128852 + ... + 4926129101.

It is an arithmetic number, because the mean of its divisors is an integer number (192119030103).

Almost surely, 2^{1231532244125} is an apocalyptic number.

It is an amenable number.

1231532244125 is a deficient number, since it is larger than the sum of its proper divisors (305419996699).

1231532244125 is an frugal number, since it uses more digits than its factorization.

1231532244125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9852257968 (or 9852257958 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Adding to 1231532244125 its reverse (5214422351321), we get a palindrome (6445954595446).

The spelling of 1231532244125 in words is "one trillion, two hundred thirty-one billion, five hundred thirty-two million, two hundred forty-four thousand, one hundred twenty-five".