997753311 has 12 divisors (see below), whose sum is σ = 1441489192. Its totient is φ = 665035056.

The previous prime is 997753297. The next prime is 997753391. The reversal of 997753311 is 113357799.

It is not a de Polignac number, because 997753311 - 2¹⁷ = 997622239 is a prime.

It is a super-2 number, since 2×997753311² = 1991023339222925442, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997753391) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59880 + ... + 74706.

Almost surely, 2^997753311 is an apocalyptic number.

997753311 is a deficient number, since it is larger than the sum of its proper divisors (443735881).

997753311 is a wasteful number, since it uses less digits than its factorization.

997753311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22310 (or 22307 counting only the distinct ones).

The product of its digits is 178605, while the sum is 45.

The square root of 997753311 is about 31587.2333546324. The cubic root of 997753311 is about 999.2505421199.

The spelling of 997753311 in words is "nine hundred ninety-seven million, seven hundred fifty-three thousand, three hundred eleven".