989345131 has 4 divisors (see below), whose sum is σ = 989896264. Its totient is φ = 988794000.

The previous prime is 989345101. The next prime is 989345177. The reversal of 989345131 is 131543989.

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

It is a cyclic number.

It is not a de Polignac number, because 989345131 - 2²⁹ = 452474219 is a prime.

It is a super-2 number, since 2×989345131² = 1957607576466814322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989345101) 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, 272865 + ... + 276466.

It is an arithmetic number, because the mean of its divisors is an integer number (247474066).

Almost surely, 2^989345131 is an apocalyptic number.

989345131 is a deficient number, since it is larger than the sum of its proper divisors (551133).

989345131 is a wasteful number, since it uses less digits than its factorization.

989345131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551132.

The product of its digits is 116640, while the sum is 43.

The square root of 989345131 is about 31453.8571720544. The cubic root of 989345131 is about 996.4356877724.

The spelling of 989345131 in words is "nine hundred eighty-nine million, three hundred forty-five thousand, one hundred thirty-one".