1031112123031 has 4 divisors (see below), whose sum is σ = 1031114253064. Its totient is φ = 1031109993000.

The previous prime is 1031112123017. The next prime is 1031112123037. The reversal of 1031112123031 is 1303212111301.

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-1031112123031 is a prime.

It is a super-2 number, since 2×1031112123031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031112123037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50761 + ... + 1436941.

It is an arithmetic number, because the mean of its divisors is an integer number (257778563266).

Almost surely, 2^{1031112123031} is an apocalyptic number.

1031112123031 is a deficient number, since it is larger than the sum of its proper divisors (2130033).

1031112123031 is an equidigital number, since it uses as much as digits as its factorization.

1031112123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130032.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031112123031 its reverse (1303212111301), we get a palindrome (2334324234332).

The spelling of 1031112123031 in words is "one trillion, thirty-one billion, one hundred twelve million, one hundred twenty-three thousand, thirty-one".