1031223013 has 4 divisors (see below), whose sum is σ = 1031292268. Its totient is φ = 1031153760.

The previous prime is 1031223007. The next prime is 1031223023. The reversal of 1031223013 is 3103221301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3103221301 = 379 ⋅8187919.

It can be written as a sum of positive squares in 2 ways, for example, as 924038404 + 107184609 = 30398^2 + 10353^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031223013 - 2⁵ = 1031222981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031223023) 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, 2118 + ... + 45463.

It is an arithmetic number, because the mean of its divisors is an integer number (257823067).

Almost surely, 2^1031223013 is an apocalyptic number.

It is an amenable number.

1031223013 is a deficient number, since it is larger than the sum of its proper divisors (69255).

1031223013 is an equidigital number, since it uses as much as digits as its factorization.

1031223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69254.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1031223013 is about 32112.6612568937. The cubic root of 1031223013 is about 1010.3011920731.

Adding to 1031223013 its reverse (3103221301), we get a palindrome (4134444314).

The spelling of 1031223013 in words is "one billion, thirty-one million, two hundred twenty-three thousand, thirteen".