31330230331133 has 4 divisors (see below), whose sum is σ = 31505259551040. Its totient is φ = 31155201111228.

The previous prime is 31330230331067. The next prime is 31330230331139. The reversal of 31330230331133 is 33113303203313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31330230331133 - 2⁸ = 31330230330877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31330230331096 and 31330230331105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330230331139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87514609685 + ... + 87514610042.

It is an arithmetic number, because the mean of its divisors is an integer number (7876314887760).

Almost surely, 2^{31330230331133} is an apocalyptic number.

It is an amenable number.

31330230331133 is a deficient number, since it is larger than the sum of its proper divisors (175029219907).

31330230331133 is a wasteful number, since it uses less digits than its factorization.

31330230331133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175029219906.

The product of its (nonzero) digits is 13122, while the sum is 29.

Adding to 31330230331133 its reverse (33113303203313), we get a palindrome (64443533534446).

The spelling of 31330230331133 in words is "thirty-one trillion, three hundred thirty billion, two hundred thirty million, three hundred thirty-one thousand, one hundred thirty-three".