1031201132321 has 8 divisors (see below), whose sum is σ = 1032492019560. Its totient is φ = 1029910508928.

The previous prime is 1031201132317. The next prime is 1031201132341. The reversal of 1031201132321 is 1232311021301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 443341573921 + 587859558400 = 665839^2 + 766720^2 .

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 1031201132321 - 2² = 1031201132317 is a prime.

It is a super-2 number, since 2×1031201132321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031201132293 and 1031201132302.

It is not an unprimeable number, because it can be changed into a prime (1031201132341) 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, 8436575 + ... + 8557931.

It is an arithmetic number, because the mean of its divisors is an integer number (129061502445).

Almost surely, 2^{1031201132321} is an apocalyptic number.

It is an amenable number.

1031201132321 is a deficient number, since it is larger than the sum of its proper divisors (1290887239).

1031201132321 is an equidigital number, since it uses as much as digits as its factorization.

1031201132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131923.

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

Adding to 1031201132321 its reverse (1232311021301), we get a palindrome (2263512153622).

The spelling of 1031201132321 in words is "one trillion, thirty-one billion, two hundred one million, one hundred thirty-two thousand, three hundred twenty-one".