31103311111321 has 8 divisors (see below), whose sum is σ = 31327383175200. Its totient is φ = 30879243436800.

The previous prime is 31103311111247. The next prime is 31103311111373. The reversal of 31103311111321 is 12311111330113.

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 31103311111321 - 2⁴¹ = 28904287855769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103311111292 and 31103311111301.

It is not an unprimeable number, because it can be changed into a prime (31103311111921) 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, 13857270 + ... + 15944608.

It is an arithmetic number, because the mean of its divisors is an integer number (3915922896900).

Almost surely, 2^{31103311111321} is an apocalyptic number.

It is an amenable number.

31103311111321 is a deficient number, since it is larger than the sum of its proper divisors (224072063879).

31103311111321 is a wasteful number, since it uses less digits than its factorization.

31103311111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194679.

The product of its (nonzero) digits is 162, while the sum is 22.

Adding to 31103311111321 its reverse (12311111330113), we get a palindrome (43414422441434).

The spelling of 31103311111321 in words is "thirty-one trillion, one hundred three billion, three hundred eleven million, one hundred eleven thousand, three hundred twenty-one".