1231011011321 has 8 divisors (see below), whose sum is σ = 1515090475584. Its totient is φ = 973986734160.

The previous prime is 1231011011291. The next prime is 1231011011381. The reversal of 1231011011321 is 1231101101321.

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 1231011011321 - 2¹⁴ = 1231010994937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231011011321.

It is not an unprimeable number, because it can be changed into a prime (1231011011381) 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, 6763796675 + ... + 6763796856.

It is an arithmetic number, because the mean of its divisors is an integer number (189386309448).

Almost surely, 2^{1231011011321} is an apocalyptic number.

It is an amenable number.

1231011011321 is a deficient number, since it is larger than the sum of its proper divisors (284079464263).

1231011011321 is a wasteful number, since it uses less digits than its factorization.

1231011011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13527593551.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1231011011321 its reverse (1231101101321), we get a palindrome (2462112112642).

The spelling of 1231011011321 in words is "one trillion, two hundred thirty-one billion, eleven million, eleven thousand, three hundred twenty-one".