131289066 has 16 divisors (see below), whose sum is σ = 291753600. Its totient is φ = 43763004.

The previous prime is 131289049. The next prime is 131289071. The reversal of 131289066 is 660982131.

It is a super-3 number, since 3×131289066³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131289066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215586 + ... + 1215693.

It is an arithmetic number, because the mean of its divisors is an integer number (18234600).

Almost surely, 2^131289066 is an apocalyptic number.

131289066 is an abundant number, since it is smaller than the sum of its proper divisors (160464534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131289066 is a wasteful number, since it uses less digits than its factorization.

131289066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431290 (or 2431284 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 131289066 is about 11458.1440905585. The cubic root of 131289066 is about 508.2485944090.

The spelling of 131289066 in words is "one hundred thirty-one million, two hundred eighty-nine thousand, sixty-six".