9917230031 has 4 divisors (see below), whose sum is σ = 9917459832. Its totient is φ = 9917000232.

The previous prime is 9917230013. The next prime is 9917230049. The reversal of 9917230031 is 1300327199.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9917230013) and next prime (9917230049).

It is a cyclic number.

It is not a de Polignac number, because 9917230031 - 2¹⁸ = 9916967887 is a prime.

It is a super-2 number, since 2×9917230031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9917229973 and 9917230000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917230231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28520 + ... + 143693.

It is an arithmetic number, because the mean of its divisors is an integer number (2479364958).

Almost surely, 2^9917230031 is an apocalyptic number.

9917230031 is a deficient number, since it is larger than the sum of its proper divisors (229801).

9917230031 is a wasteful number, since it uses less digits than its factorization.

9917230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229800.

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

The square root of 9917230031 is about 99585.2902340501. The cubic root of 9917230031 is about 2148.4741313992.

The spelling of 9917230031 in words is "nine billion, nine hundred seventeen million, two hundred thirty thousand, thirty-one".