1231342042045 has 8 divisors (see below), whose sum is σ = 1477618742880. Its totient is φ = 985068105360.

The previous prime is 1231342042031. The next prime is 1231342042057. The reversal of 1231342042045 is 5402402431321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231342042045 - 2²¹ = 1231339944893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231342041998 and 1231342042016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464730 + ... + 1636660.

It is an arithmetic number, because the mean of its divisors is an integer number (184702342860).

Almost surely, 2^{1231342042045} is an apocalyptic number.

It is an amenable number.

1231342042045 is a deficient number, since it is larger than the sum of its proper divisors (246276700835).

1231342042045 is a wasteful number, since it uses less digits than its factorization.

1231342042045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382075.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1231342042045 its reverse (5402402431321), we get a palindrome (6633744473366).

The spelling of 1231342042045 in words is "one trillion, two hundred thirty-one billion, three hundred forty-two million, forty-two thousand, forty-five".