1001231316 has 36 divisors (see below), whose sum is σ = 2592623124. Its totient is φ = 325603200.

The previous prime is 1001231267. The next prime is 1001231327. The reversal of 1001231316 is 6131321001.

It can be written as a sum of positive squares in 2 ways, for example, as 74028816 + 927202500 = 8604^2 + 30450^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 337695 + ... + 340646.

It is an arithmetic number, because the mean of its divisors is an integer number (72017309).

Almost surely, 2^1001231316 is an apocalyptic number.

It is an amenable number.

1001231316 is an abundant number, since it is smaller than the sum of its proper divisors (1591391808).

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

1001231316 is a wasteful number, since it uses less digits than its factorization.

1001231316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678392 (or 678387 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1001231316 is about 31642.2394277017. The cubic root of 1001231316 is about 1000.4102703219.

Adding to 1001231316 its reverse (6131321001), we get a palindrome (7132552317).

It can be divided in two parts, 10012 and 31316, that added together give a triangular number (41328 = T₂₈₇).

The spelling of 1001231316 in words is "one billion, one million, two hundred thirty-one thousand, three hundred sixteen".