313112131440 has 80 divisors (see below), whose sum is σ = 983944205088. Its totient is φ = 82352775168.

The previous prime is 313112131433. The next prime is 313112131457. The reversal of 313112131440 is 44131211313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 313112131440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8918329 + ... + 8953368.

Almost surely, 2^313112131440 is an apocalyptic number.

313112131440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313112131440 is an abundant number, since it is smaller than the sum of its proper divisors (670832073648).

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

313112131440 is a wasteful number, since it uses less digits than its factorization.

313112131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17871786 (or 17871780 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 313112131440 its reverse (44131211313), we get a palindrome (357243342753).

The spelling of 313112131440 in words is "three hundred thirteen billion, one hundred twelve million, one hundred thirty-one thousand, four hundred forty".