1031131302123 has 32 divisors (see below), whose sum is σ = 1494726266880. Its totient is φ = 628495418880.

The previous prime is 1031131302101. The next prime is 1031131302193. The reversal of 1031131302123 is 3212031311301.

It is a happy number.

It is not a de Polignac number, because 1031131302123 - 2⁶ = 1031131302059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031131302123.

It is not an unprimeable number, because it can be changed into a prime (1031131302193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6403168 + ... + 6562226.

It is an arithmetic number, because the mean of its divisors is an integer number (46710195840).

Almost surely, 2^{1031131302123} is an apocalyptic number.

1031131302123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1031131302123 is a deficient number, since it is larger than the sum of its proper divisors (463594964757).

1031131302123 is a wasteful number, since it uses less digits than its factorization.

1031131302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160659.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1031131302123 its reverse (3212031311301), we get a palindrome (4243162613424).

The spelling of 1031131302123 in words is "one trillion, thirty-one billion, one hundred thirty-one million, three hundred two thousand, one hundred twenty-three".