1031223011321 has 8 divisors (see below), whose sum is σ = 1033287985800. Its totient is φ = 1029158366080.

The previous prime is 1031223011303. The next prime is 1031223011339. The reversal of 1031223011321 is 1231103221301.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1031223011303) and next prime (1031223011339).

It can be written as a sum of positive squares in 4 ways, for example, as 39615329296 + 991607682025 = 199036^2 + 995795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1031223011321 - 2¹⁴ = 1031222994937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031223011293 and 1031223011302.

It is not an unprimeable number, because it can be changed into a prime (1031223011381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6754295 + ... + 6905283.

It is an arithmetic number, because the mean of its divisors is an integer number (129160998225).

Almost surely, 2^{1031223011321} is an apocalyptic number.

It is an amenable number.

1031223011321 is a deficient number, since it is larger than the sum of its proper divisors (2064974479).

1031223011321 is a wasteful number, since it uses less digits than its factorization.

1031223011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164619.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1031223011321 its reverse (1231103221301), we get a palindrome (2262326232622).

The spelling of 1031223011321 in words is "one trillion, thirty-one billion, two hundred twenty-three million, eleven thousand, three hundred twenty-one".