997258312 has 8 divisors (see below), whose sum is σ = 1869859350. Its totient is φ = 498629152.

The previous prime is 997258307. The next prime is 997258319. The reversal of 997258312 is 213852799.

997258312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 499343716 + 497914596 = 22346^2 + 22314^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (997258319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62328637 + ... + 62328652.

Almost surely, 2^997258312 is an apocalyptic number.

It is an amenable number.

997258312 is a deficient number, since it is larger than the sum of its proper divisors (872601038).

997258312 is a wasteful number, since it uses less digits than its factorization.

997258312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124657295 (or 124657291 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 997258312 is about 31579.3969543435. The cubic root of 997258312 is about 999.0852675196.

The spelling of 997258312 in words is "nine hundred ninety-seven million, two hundred fifty-eight thousand, three hundred twelve".