98720031 has 16 divisors (see below), whose sum is σ = 136562400. Its totient is φ = 63358848.

The previous prime is 98720023. The next prime is 98720047. The reversal of 98720031 is 13002789.

It is a happy number.

It is not a de Polignac number, because 98720031 - 2³ = 98720023 is a prime.

It is a super-2 number, since 2×98720031² = 19491289041281922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98720081) 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, 32385 + ... + 35301.

It is an arithmetic number, because the mean of its divisors is an integer number (8535150).

Almost surely, 2^98720031 is an apocalyptic number.

98720031 is a deficient number, since it is larger than the sum of its proper divisors (37842369).

98720031 is a wasteful number, since it uses less digits than its factorization.

98720031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 98720031 is about 9935.7954387155. The cubic root of 98720031 is about 462.1700101430.

The spelling of 98720031 in words is "ninety-eight million, seven hundred twenty thousand, thirty-one".