1231342331234 has 4 divisors (see below), whose sum is σ = 1847013496854. Its totient is φ = 615671165616.

The previous prime is 1231342331221. The next prime is 1231342331237. The reversal of 1231342331234 is 4321332431321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 842259556009 + 389082775225 = 917747^2 + 623765^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231342331234.

It is not an unprimeable number, because it can be changed into a prime (1231342331237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307835582807 + ... + 307835582810.

Almost surely, 2^{1231342331234} is an apocalyptic number.

1231342331234 is a deficient number, since it is larger than the sum of its proper divisors (615671165620).

1231342331234 is an equidigital number, since it uses as much as digits as its factorization.

1231342331234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615671165619.

The product of its digits is 31104, while the sum is 32.

Adding to 1231342331234 its reverse (4321332431321), we get a palindrome (5552674762555).

The spelling of 1231342331234 in words is "one trillion, two hundred thirty-one billion, three hundred forty-two million, three hundred thirty-one thousand, two hundred thirty-four".