99020031 has 8 divisors (see below), whose sum is σ = 144029184. Its totient is φ = 60012120.

The previous prime is 99020027. The next prime is 99020041. The reversal of 99020031 is 13002099.

It is a happy number.

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

It is not a de Polignac number, because 99020031 - 2² = 99020027 is a prime.

It is a super-2 number, since 2×99020031² = 19609933078481922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99019983 and 99020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99020011) 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, 1500271 + ... + 1500336.

It is an arithmetic number, because the mean of its divisors is an integer number (18003648).

Almost surely, 2^99020031 is an apocalyptic number.

99020031 is a deficient number, since it is larger than the sum of its proper divisors (45009153).

99020031 is a wasteful number, since it uses less digits than its factorization.

99020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000621.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 99020031 is about 9950.8809157783. The cubic root of 99020031 is about 462.6376990527.

The spelling of 99020031 in words is "ninety-nine million, twenty thousand, thirty-one".