31311021120133 has 32 divisors (see below), whose sum is σ = 33186596855040. Its totient is φ = 29459031782400.

The previous prime is 31311021120103. The next prime is 31311021120151. The reversal of 31311021120133 is 33102112011313.

It is a cyclic number.

It is not a de Polignac number, because 31311021120133 - 2¹³ = 31311021111941 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 (31311021120103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3053834835 + ... + 3053845087.

It is an arithmetic number, because the mean of its divisors is an integer number (1037081151720).

Almost surely, 2^{31311021120133} is an apocalyptic number.

It is an amenable number.

31311021120133 is a deficient number, since it is larger than the sum of its proper divisors (1875575734907).

31311021120133 is a wasteful number, since it uses less digits than its factorization.

31311021120133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12397.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31311021120133 its reverse (33102112011313), we get a palindrome (64413133131446).

The spelling of 31311021120133 in words is "thirty-one trillion, three hundred eleven billion, twenty-one million, one hundred twenty thousand, one hundred thirty-three".