313021113312 has 48 divisors (see below), whose sum is σ = 821721151440. Its totient is φ = 104335199232.

The previous prime is 313021113311. The next prime is 313021113313. The reversal of 313021113312 is 213311120313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (313021113311) and next prime (313021113313).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313021113311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2199388 + ... + 2337380.

It is an arithmetic number, because the mean of its divisors is an integer number (17119190655).

Almost surely, 2^313021113312 is an apocalyptic number.

313021113312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

313021113312 is an abundant number, since it is smaller than the sum of its proper divisors (508700038128).

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

313021113312 is a wasteful number, since it uses less digits than its factorization.

313021113312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161635 (or 161627 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 313021113312 its reverse (213311120313), we get a palindrome (526332233625).

The spelling of 313021113312 in words is "three hundred thirteen billion, twenty-one million, one hundred thirteen thousand, three hundred twelve".