31103020222133 has 4 divisors (see below), whose sum is σ = 31131633857280. Its totient is φ = 31074406586988.

The previous prime is 31103020222121. The next prime is 31103020222159. The reversal of 31103020222133 is 33122202030113.

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 31103020222133 - 2¹⁸ = 31103019959989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103020222099 and 31103020222108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103020222033) 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, 14306815943 + ... + 14306818116.

It is an arithmetic number, because the mean of its divisors is an integer number (7782908464320).

Almost surely, 2^{31103020222133} is an apocalyptic number.

It is an amenable number.

31103020222133 is a deficient number, since it is larger than the sum of its proper divisors (28613635147).

31103020222133 is a wasteful number, since it uses less digits than its factorization.

31103020222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28613635146.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31103020222133 its reverse (33122202030113), we get a palindrome (64225222252246).

The spelling of 31103020222133 in words is "thirty-one trillion, one hundred three billion, twenty million, two hundred twenty-two thousand, one hundred thirty-three".