1031330321231 has 16 divisors (see below), whose sum is σ = 1190366751744. Its totient is φ = 875229329184.

The previous prime is 1031330321207. The next prime is 1031330321291. The reversal of 1031330321231 is 1321230331301.

It is not a de Polignac number, because 1031330321231 - 2¹⁴ = 1031330304847 is a prime.

It is a super-2 number, since 2×1031330321231² (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 = 1031330321197 and 1031330321206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031330321201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900746 + ... + 1695288.

It is an arithmetic number, because the mean of its divisors is an integer number (74397921984).

Almost surely, 2^{1031330321231} is an apocalyptic number.

1031330321231 is a deficient number, since it is larger than the sum of its proper divisors (159036430513).

1031330321231 is a wasteful number, since it uses less digits than its factorization.

1031330321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796390.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1031330321231 its reverse (1321230331301), we get a palindrome (2352560652532).

The spelling of 1031330321231 in words is "one trillion, thirty-one billion, three hundred thirty million, three hundred twenty-one thousand, two hundred thirty-one".