1031320142045 has 4 divisors (see below), whose sum is σ = 1237584170460. Its totient is φ = 825056113632.

The previous prime is 1031320142009. The next prime is 1031320142089. The reversal of 1031320142045 is 5402410231301.

It is a happy number.

1031320142045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 655319392324 + 376000749721 = 809518^2 + 613189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031320142045 - 2¹² = 1031320137949 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103132014200 + ... + 103132014209.

It is an arithmetic number, because the mean of its divisors is an integer number (309396042615).

Almost surely, 2^{1031320142045} is an apocalyptic number.

It is an amenable number.

1031320142045 is a deficient number, since it is larger than the sum of its proper divisors (206264028415).

1031320142045 is an equidigital number, since it uses as much as digits as its factorization.

1031320142045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206264028414.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1031320142045 its reverse (5402410231301), we get a palindrome (6433730373346).

The spelling of 1031320142045 in words is "one trillion, thirty-one billion, three hundred twenty million, one hundred forty-two thousand, forty-five".