313431212440 has 64 divisors (see below), whose sum is σ = 716046739200. Its totient is φ = 123461380992.

The previous prime is 313431212377. The next prime is 313431212441. The reversal of 313431212440 is 44212134313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 313431212399 and 313431212408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313431212441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524979 + ... + 949981.

It is an arithmetic number, because the mean of its divisors is an integer number (11188230300).

Almost surely, 2^313431212440 is an apocalyptic number.

It is an amenable number.

313431212440 is an abundant number, since it is smaller than the sum of its proper divisors (402615526760).

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

313431212440 is a wasteful number, since it uses less digits than its factorization.

313431212440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425296 (or 425292 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 313431212440 its reverse (44212134313), we get a palindrome (357643346753).

The spelling of 313431212440 in words is "three hundred thirteen billion, four hundred thirty-one million, two hundred twelve thousand, four hundred forty".