31323103113312 has 72 divisors (see below), whose sum is σ = 90584821552680. Its totient is φ = 10264067681280.

The previous prime is 31323103113287. The next prime is 31323103113329. The reversal of 31323103113312 is 21331130132313.

31323103113312 is a `hidden beast` number, since 3 + 1 + 3 + 2 + 3 + 10 + 311 + 331 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×31323103113312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921684489 + ... + 921718472.

It is an arithmetic number, because the mean of its divisors is an integer number (1258122521565).

Almost surely, 2^{31323103113312} is an apocalyptic number.

31323103113312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31323103113312 is an abundant number, since it is smaller than the sum of its proper divisors (59261718439368).

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

31323103113312 is a wasteful number, since it uses less digits than its factorization.

31323103113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843403036 (or 1843403025 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 31323103113312 its reverse (21331130132313), we get a palindrome (52654233245625).

The spelling of 31323103113312 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred three million, one hundred thirteen thousand, three hundred twelve".