1031113129 has 4 divisors (see below), whose sum is σ = 1031455684. Its totient is φ = 1030770576.

The previous prime is 1031113081. The next prime is 1031113133. The reversal of 1031113129 is 9213111301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9213111301 = 71 ⋅129762131.

It can be written as a sum of positive squares in 2 ways, for example, as 541818729 + 489294400 = 23277^2 + 22120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031113129 - 2²⁵ = 997558697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031113429) 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, 166722 + ... + 172795.

It is an arithmetic number, because the mean of its divisors is an integer number (257863921).

Almost surely, 2^1031113129 is an apocalyptic number.

It is an amenable number.

1031113129 is a deficient number, since it is larger than the sum of its proper divisors (342555).

1031113129 is an equidigital number, since it uses as much as digits as its factorization.

1031113129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342554.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1031113129 is about 32110.9502973674. The cubic root of 1031113129 is about 1010.2653059203.

The spelling of 1031113129 in words is "one billion, thirty-one million, one hundred thirteen thousand, one hundred twenty-nine".