1031010031123 has 4 divisors (see below), whose sum is σ = 1031216775640. Its totient is φ = 1030803286608.

The previous prime is 1031010031097. The next prime is 1031010031141. The reversal of 1031010031123 is 3211300101301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031010031123 is a prime.

It is a super-2 number, since 2×1031010031123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031010031097 and 1031010031106.

It is not an unprimeable number, because it can be changed into a prime (1031010034123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103364778 + ... + 103374751.

It is an arithmetic number, because the mean of its divisors is an integer number (257804193910).

Almost surely, 2^{1031010031123} is an apocalyptic number.

1031010031123 is a deficient number, since it is larger than the sum of its proper divisors (206744517).

1031010031123 is an equidigital number, since it uses as much as digits as its factorization.

1031010031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206744516.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 1031010031123 its reverse (3211300101301), we get a palindrome (4242310132424).

The spelling of 1031010031123 in words is "one trillion, thirty-one billion, ten million, thirty-one thousand, one hundred twenty-three".