31123332101312 has 42 divisors (see below), whose sum is σ = 67885356747684. Its totient is φ = 14146969133440.

The previous prime is 31123332101261. The next prime is 31123332101341. The reversal of 31123332101312 is 21310123332113.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2009504918 + ... + 2009520405.

It is an arithmetic number, because the mean of its divisors is an integer number (1616318017802).

Almost surely, 2^{31123332101312} is an apocalyptic number.

31123332101312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31123332101312 is an abundant number, since it is smaller than the sum of its proper divisors (36762024646372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31123332101312 is a wasteful number, since it uses less digits than its factorization.

31123332101312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019025357 (or 4019025336 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31123332101312 its reverse (21310123332113), we get a palindrome (52433455433425).

The spelling of 31123332101312 in words is "thirty-one trillion, one hundred twenty-three billion, three hundred thirty-two million, one hundred one thousand, three hundred twelve".