1231688407416 has 64 divisors (see below), whose sum is σ = 3149644193280. Its totient is φ = 401200312320.

The previous prime is 1231688407409. The next prime is 1231688407507. The reversal of 1231688407416 is 6147048861321.

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, 128686 + ... + 1574781.

It is an arithmetic number, because the mean of its divisors is an integer number (49213190520).

Almost surely, 2^{1231688407416} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231688407416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574822096640).

1231688407416 is an abundant number, since it is smaller than the sum of its proper divisors (1917955785864).

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

1231688407416 is a wasteful number, since it uses less digits than its factorization.

1231688407416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704164 (or 1704160 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 1231688407416 in words is "one trillion, two hundred thirty-one billion, six hundred eighty-eight million, four hundred seven thousand, four hundred sixteen".