1631325311316 has 36 divisors (see below), whose sum is σ = 4125125987892. Its totient is φ = 543577549824.

The previous prime is 1631325311269. The next prime is 1631325311381. The reversal of 1631325311316 is 6131135231361.

1631325311316 is a `hidden beast` number, since 1 + 6 + 3 + 1 + 3 + 25 + 311 + 316 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 647777083716 + 983548227600 = 804846^2 + 991740^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1631325311316² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8130931 + ... + 8329146.

It is an arithmetic number, because the mean of its divisors is an integer number (114586832997).

Almost surely, 2^{1631325311316} is an apocalyptic number.

It is an amenable number.

1631325311316 is an abundant number, since it is smaller than the sum of its proper divisors (2493800676576).

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

1631325311316 is a wasteful number, since it uses less digits than its factorization.

1631325311316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16462840 (or 16462835 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The spelling of 1631325311316 in words is "one trillion, six hundred thirty-one billion, three hundred twenty-five million, three hundred eleven thousand, three hundred sixteen".