1031213020321 has 16 divisors (see below), whose sum is σ = 1179197667648. Its totient is φ = 893331532800.

The previous prime is 1031213020319. The next prime is 1031213020339. The reversal of 1031213020321 is 1230203121301.

It is a cyclic number.

It is not a de Polignac number, because 1031213020321 - 2¹ = 1031213020319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031213020351) 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, 26567856 + ... + 26606641.

It is an arithmetic number, because the mean of its divisors is an integer number (73699854228).

Almost surely, 2^{1031213020321} is an apocalyptic number.

1031213020321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1031213020321 is a deficient number, since it is larger than the sum of its proper divisors (147984647327).

1031213020321 is a wasteful number, since it uses less digits than its factorization.

1031213020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53174592.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1031213020321 its reverse (1230203121301), we get a palindrome (2261416141622).

The spelling of 1031213020321 in words is "one trillion, thirty-one billion, two hundred thirteen million, twenty thousand, three hundred twenty-one".