31321110202133 has 4 divisors (see below), whose sum is σ = 31356421488480. Its totient is φ = 31285798915788.

The previous prime is 31321110202103. The next prime is 31321110202153. The reversal of 31321110202133 is 33120201112313.

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 31321110202133 - 2⁸ = 31321110201877 is a prime.

It is a super-2 number, since 2×31321110202133² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321110202099 and 31321110202108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321110202103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17655641843 + ... + 17655643616.

It is an arithmetic number, because the mean of its divisors is an integer number (7839105372120).

Almost surely, 2^{31321110202133} is an apocalyptic number.

It is an amenable number.

31321110202133 is a deficient number, since it is larger than the sum of its proper divisors (35311286347).

31321110202133 is an equidigital number, since it uses as much as digits as its factorization.

31321110202133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35311286346.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31321110202133 its reverse (33120201112313), we get a palindrome (64441311314446).

The spelling of 31321110202133 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred ten million, two hundred two thousand, one hundred thirty-three".