997103231 has 8 divisors (see below), whose sum is σ = 1026564000. Its totient is φ = 967887360.

The previous prime is 997103171. The next prime is 997103249. The reversal of 997103231 is 132301799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997103231 - 2²² = 992908927 is a prime.

It is a super-2 number, since 2×997103231² = 1988429706541278722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 997103191 and 997103200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997102231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52946 + ... + 69263.

It is an arithmetic number, because the mean of its divisors is an integer number (128320500).

Almost surely, 2^997103231 is an apocalyptic number.

997103231 is a deficient number, since it is larger than the sum of its proper divisors (29460769).

997103231 is a wasteful number, since it uses less digits than its factorization.

997103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122449.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 997103231 is about 31576.9414446681. The cubic root of 997103231 is about 999.0334764666.

The spelling of 997103231 in words is "nine hundred ninety-seven million, one hundred three thousand, two hundred thirty-one".