1031401321 has 4 divisors (see below), whose sum is σ = 1031494212. Its totient is φ = 1031308432.

The previous prime is 1031401303. The next prime is 1031401363. The reversal of 1031401321 is 1231041301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 331058025 + 700343296 = 18195^2 + 26464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031401321 - 2¹⁷ = 1031270249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031401295 and 1031401304.

It is not an unprimeable number, because it can be changed into a prime (1031401391) 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, 27106 + ... + 52891.

It is an arithmetic number, because the mean of its divisors is an integer number (257873553).

Almost surely, 2^1031401321 is an apocalyptic number.

It is an amenable number.

1031401321 is a deficient number, since it is larger than the sum of its proper divisors (92891).

1031401321 is an equidigital number, since it uses as much as digits as its factorization.

1031401321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92890.

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

The square root of 1031401321 is about 32115.4374250142. The cubic root of 1031401321 is about 1010.3594188584.

Adding to 1031401321 its reverse (1231041301), we get a palindrome (2262442622).

The spelling of 1031401321 in words is "one billion, thirty-one million, four hundred one thousand, three hundred twenty-one".