998528311 has 16 divisors (see below), whose sum is σ = 1100395296. Its totient is φ = 898560000.

The previous prime is 998528273. The next prime is 998528329. The reversal of 998528311 is 113825899.

It is a 12-Lehmer number, since φ(998528311) divides (998528311-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 998528311 - 2⁷ = 998528183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998528381) 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, 478791 + ... + 480871.

It is an arithmetic number, because the mean of its divisors is an integer number (68774706).

Almost surely, 2^998528311 is an apocalyptic number.

998528311 is a deficient number, since it is larger than the sum of its proper divisors (101866985).

998528311 is a wasteful number, since it uses less digits than its factorization.

998528311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its digits is 155520, while the sum is 46.

The square root of 998528311 is about 31599.4985877941. The cubic root of 998528311 is about 999.5091961510.

The spelling of 998528311 in words is "nine hundred ninety-eight million, five hundred twenty-eight thousand, three hundred eleven".