31232321111311 has 4 divisors (see below), whose sum is σ = 31235507117352. Its totient is φ = 31229135105272.

The previous prime is 31232321111309. The next prime is 31232321111351. The reversal of 31232321111311 is 11311112323213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31232321111311 - 2¹ = 31232321111309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232321111351) 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, 1592988316 + ... + 1593007921.

It is an arithmetic number, because the mean of its divisors is an integer number (7808876779338).

Almost surely, 2^{31232321111311} is an apocalyptic number.

31232321111311 is a deficient number, since it is larger than the sum of its proper divisors (3186006041).

31232321111311 is an equidigital number, since it uses as much as digits as its factorization.

31232321111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186006040.

The product of its digits is 648, while the sum is 25.

Adding to 31232321111311 its reverse (11311112323213), we get a palindrome (42543433434524).

The spelling of 31232321111311 in words is "thirty-one trillion, two hundred thirty-two billion, three hundred twenty-one million, one hundred eleven thousand, three hundred eleven".