997030023 has 16 divisors (see below), whose sum is σ = 1450759296. Its totient is φ = 604038240.

The previous prime is 997030003. The next prime is 997030049. The reversal of 997030023 is 320030799.

It is not a de Polignac number, because 997030023 - 2⁸ = 997029767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997030003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152661 + ... + 159057.

It is an arithmetic number, because the mean of its divisors is an integer number (90672456).

Almost surely, 2^997030023 is an apocalyptic number.

997030023 is a deficient number, since it is larger than the sum of its proper divisors (453729273).

997030023 is a wasteful number, since it uses less digits than its factorization.

997030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11134.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 997030023 is about 31575.7822230899. The cubic root of 997030023 is about 999.0090259615.

It can be divided in two parts, 9970 and 30023, that added together give a palindrome (39993).

The spelling of 997030023 in words is "nine hundred ninety-seven million, thirty thousand, twenty-three".