31120003320311 has 4 divisors (see below), whose sum is σ = 31120046098800. Its totient is φ = 31119960541824.

The previous prime is 31120003320281. The next prime is 31120003320349. The reversal of 31120003320311 is 11302330002113.

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 31120003320311 - 2³⁴ = 31102823451127 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 (31120003320611) 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, 20278826 + ... + 21759383.

It is an arithmetic number, because the mean of its divisors is an integer number (7780011524700).

Almost surely, 2^{31120003320311} is an apocalyptic number.

31120003320311 is a deficient number, since it is larger than the sum of its proper divisors (42778489).

31120003320311 is an equidigital number, since it uses as much as digits as its factorization.

31120003320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42778488.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31120003320311 its reverse (11302330002113), we get a palindrome (42422333322424).

The spelling of 31120003320311 in words is "thirty-one trillion, one hundred twenty billion, three million, three hundred twenty thousand, three hundred eleven".