1031222113 has 4 divisors (see below), whose sum is σ = 1050679188. Its totient is φ = 1011765040.

The previous prime is 1031222083. The next prime is 1031222117. The reversal of 1031222113 is 3112221301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 952154449 + 79067664 = 30857^2 + 8892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031222113 - 2²⁹ = 494351201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031222117) 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, 9728458 + ... + 9728563.

It is an arithmetic number, because the mean of its divisors is an integer number (262669797).

Almost surely, 2^1031222113 is an apocalyptic number.

It is an amenable number.

1031222113 is a deficient number, since it is larger than the sum of its proper divisors (19457075).

1031222113 is an equidigital number, since it uses as much as digits as its factorization.

1031222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19457074.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1031222113 is about 32112.6472437263. The cubic root of 1031222113 is about 1010.3008981595.

Adding to 1031222113 its reverse (3112221301), we get a palindrome (4143443414).

The spelling of 1031222113 in words is "one billion, thirty-one million, two hundred twenty-two thousand, one hundred thirteen".