997357312 has 72 divisors (see below), whose sum is σ = 2284783200. Its totient is φ = 425644032.

The previous prime is 997357307. The next prime is 997357321. The reversal of 997357312 is 213753799.

997357312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481014 + ... + 483082.

It is an arithmetic number, because the mean of its divisors is an integer number (31733100).

Almost surely, 2^997357312 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 997357312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1142391600).

997357312 is an abundant number, since it is smaller than the sum of its proper divisors (1287425888).

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

997357312 is a wasteful number, since it uses less digits than its factorization.

997357312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361 (or 2347 counting only the distinct ones).

The product of its digits is 357210, while the sum is 46.

The square root of 997357312 is about 31580.9643931277. The cubic root of 997357312 is about 999.1183268810.

The spelling of 997357312 in words is "nine hundred ninety-seven million, three hundred fifty-seven thousand, three hundred twelve".