1231410404440 has 128 divisors (see below), whose sum is σ = 2833401384000. Its totient is φ = 481556275200.

The previous prime is 1231410404407. The next prime is 1231410404447. The reversal of 1231410404440 is 444040141321.

It is a junction number, because it is equal to n+sod(n) for n = 1231410404399 and 1231410404408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231410404447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202165795 + ... + 202171885.

Almost surely, 2^{1231410404440} is an apocalyptic number.

1231410404440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231410404440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416700692000).

1231410404440 is an abundant number, since it is smaller than the sum of its proper divisors (1601990979560).

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

1231410404440 is a wasteful number, since it uses less digits than its factorization.

1231410404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821 (or 6817 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1231410404440 its reverse (444040141321), we get a palindrome (1675450545761).

The spelling of 1231410404440 in words is "one trillion, two hundred thirty-one billion, four hundred ten million, four hundred four thousand, four hundred forty".