31204423315133 has 4 divisors (see below), whose sum is σ = 31224336796800. Its totient is φ = 31184509833468.

The previous prime is 31204423315103. The next prime is 31204423315141. The reversal of 31204423315133 is 33151332440213.

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 31204423315133 - 2¹² = 31204423311037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31204423315093 and 31204423315102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204423315103) 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, 9956738483 + ... + 9956741616.

It is an arithmetic number, because the mean of its divisors is an integer number (7806084199200).

Almost surely, 2^{31204423315133} is an apocalyptic number.

It is an amenable number.

31204423315133 is a deficient number, since it is larger than the sum of its proper divisors (19913481667).

31204423315133 is a wasteful number, since it uses less digits than its factorization.

31204423315133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19913481666.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 31204423315133 its reverse (33151332440213), we get a palindrome (64355755755346).

The spelling of 31204423315133 in words is "thirty-one trillion, two hundred four billion, four hundred twenty-three million, three hundred fifteen thousand, one hundred thirty-three".