1031143361 has 4 divisors (see below), whose sum is σ = 1031338452. Its totient is φ = 1030948272.

The previous prime is 1031143307. The next prime is 1031143363. The reversal of 1031143361 is 1633411301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1633411301 = 919 ⋅1777379.

It can be written as a sum of positive squares in 2 ways, for example, as 413919025 + 617224336 = 20345^2 + 24844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031143361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031143363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89390 + ... + 100263.

It is an arithmetic number, because the mean of its divisors is an integer number (257834613).

Almost surely, 2^1031143361 is an apocalyptic number.

It is an amenable number.

1031143361 is a deficient number, since it is larger than the sum of its proper divisors (195091).

1031143361 is an equidigital number, since it uses as much as digits as its factorization.

1031143361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195090.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1031143361 is about 32111.4210367589. The cubic root of 1031143361 is about 1010.2751794060.

Adding to 1031143361 its reverse (1633411301), we get a palindrome (2664554662).

The spelling of 1031143361 in words is "one billion, thirty-one million, one hundred forty-three thousand, three hundred sixty-one".