1031223133 has 4 divisors (see below), whose sum is σ = 1031594620. Its totient is φ = 1030851648.

The previous prime is 1031223121. The next prime is 1031223139. The reversal of 1031223133 is 3313221301.

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 801003204 + 230219929 = 28302^2 + 15173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031223133 - 2¹³ = 1031214941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031223133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031223139) 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, 181548 + ... + 187141.

It is an arithmetic number, because the mean of its divisors is an integer number (257898655).

Almost surely, 2^1031223133 is an apocalyptic number.

It is an amenable number.

1031223133 is a deficient number, since it is larger than the sum of its proper divisors (371487).

1031223133 is an equidigital number, since it uses as much as digits as its factorization.

1031223133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371486.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1031223133 is about 32112.6631253155. The cubic root of 1031223133 is about 1010.3012312615.

Adding to 1031223133 its reverse (3313221301), we get a palindrome (4344444434).

It can be divided in two parts, 103 and 1223133, that added together give a square (1223236 = 1106²).

The spelling of 1031223133 in words is "one billion, thirty-one million, two hundred twenty-three thousand, one hundred thirty-three".