31101122002013 has 4 divisors (see below), whose sum is σ = 35544139430880. Its totient is φ = 26658104573148.

The previous prime is 31101122001871. The next prime is 31101122002033. The reversal of 31101122002013 is 31020022110113.

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 31101122002013 - 2¹⁰ = 31101122000989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31101122001982 and 31101122002000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31101122002033) 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, 2221508714423 + ... + 2221508714436.

It is an arithmetic number, because the mean of its divisors is an integer number (8886034857720).

Almost surely, 2^{31101122002013} is an apocalyptic number.

It is an amenable number.

31101122002013 is a deficient number, since it is larger than the sum of its proper divisors (4443017428867).

31101122002013 is an equidigital number, since it uses as much as digits as its factorization.

31101122002013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443017428866.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31101122002013 its reverse (31020022110113), we get a palindrome (62121144112126).

The spelling of 31101122002013 in words is "thirty-one trillion, one hundred one billion, one hundred twenty-two million, two thousand, thirteen".