1031321201233 has 8 divisors (see below), whose sum is σ = 1034919117288. Its totient is φ = 1027723816704.

The previous prime is 1031321201173. The next prime is 1031321201243. The reversal of 1031321201233 is 3321021231301.

It can be written as a sum of positive squares in 4 ways, for example, as 591994825744 + 439326375489 = 769412^2 + 662817^2 .

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 1031321201233 - 2¹³ = 1031321193041 is a prime.

It is a super-2 number, since 2×1031321201233² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031321201243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3975385 + ... + 4226857.

It is an arithmetic number, because the mean of its divisors is an integer number (129364889661).

Almost surely, 2^{1031321201233} is an apocalyptic number.

It is an amenable number.

1031321201233 is a deficient number, since it is larger than the sum of its proper divisors (3597916055).

1031321201233 is a wasteful number, since it uses less digits than its factorization.

1031321201233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265763.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1031321201233 its reverse (3321021231301), we get a palindrome (4352342432534).

The spelling of 1031321201233 in words is "one trillion, thirty-one billion, three hundred twenty-one million, two hundred one thousand, two hundred thirty-three".