31101123441213 has 12 divisors (see below), whose sum is σ = 51341537109408. Its totient is φ = 17772070537800.

The previous prime is 31101123441191. The next prime is 31101123441239. The reversal of 31101123441213 is 31214432110113.

31101123441213 is a `hidden beast` number, since 3 + 1 + 1 + 0 + 1 + 1 + 2 + 3 + 441 + 213 = 666.

It is not a de Polignac number, because 31101123441213 - 2⁵ = 31101123441181 is a prime.

It is a super-2 number, since 2×31101123441213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31101123441013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246834312963 + ... + 246834313088.

It is an arithmetic number, because the mean of its divisors is an integer number (4278461425784).

Almost surely, 2^{31101123441213} is an apocalyptic number.

It is an amenable number.

31101123441213 is a deficient number, since it is larger than the sum of its proper divisors (20240413668195).

31101123441213 is a wasteful number, since it uses less digits than its factorization.

31101123441213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493668626064 (or 493668626061 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 31101123441213 its reverse (31214432110113), we get a palindrome (62315555551326).

The spelling of 31101123441213 in words is "thirty-one trillion, one hundred one billion, one hundred twenty-three million, four hundred forty-one thousand, two hundred thirteen".