1031220553123 has 8 divisors (see below), whose sum is σ = 1064787655680. Its totient is φ = 997672320840.

The previous prime is 1031220553039. The next prime is 1031220553159. The reversal of 1031220553123 is 3213550221301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031220553123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031220553091 and 1031220553100.

It is not an unprimeable number, because it can be changed into a prime (1031220553523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4606453 + ... + 4825126.

It is an arithmetic number, because the mean of its divisors is an integer number (133098456960).

Almost surely, 2^{1031220553123} is an apocalyptic number.

1031220553123 is a deficient number, since it is larger than the sum of its proper divisors (33567102557).

1031220553123 is an equidigital number, since it uses as much as digits as its factorization.

1031220553123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9435137.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1031220553123 its reverse (3213550221301), we get a palindrome (4244770774424).

The spelling of 1031220553123 in words is "one trillion, thirty-one billion, two hundred twenty million, five hundred fifty-three thousand, one hundred twenty-three".