244313131440 has 80 divisors (see below), whose sum is σ = 865566528768. Its totient is φ = 55843001088.

The previous prime is 244313131429. The next prime is 244313131453. The reversal of 244313131440 is 44131313442.

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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 244313131398 and 244313131407.

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, 72710562 + ... + 72713921.

Almost surely, 2^244313131440 is an apocalyptic number.

244313131440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244313131440 is an abundant number, since it is smaller than the sum of its proper divisors (621253397328).

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

244313131440 is a wasteful number, since it uses less digits than its factorization.

244313131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145424506 (or 145424500 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 244313131440 its reverse (44131313442), we get a palindrome (288444444882).

The spelling of 244313131440 in words is "two hundred forty-four billion, three hundred thirteen million, one hundred thirty-one thousand, four hundred forty".