999130131 has 12 divisors (see below), whose sum is σ = 1467649560. Its totient is φ = 654796800.

The previous prime is 999130087. The next prime is 999130159. The reversal of 999130131 is 131031999.

It is not a de Polignac number, because 999130131 - 2¹¹ = 999128083 is a prime.

It is a super-2 number, since 2×999130131² = 1996522037344154322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (999130631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 940270 + ... + 941331.

It is an arithmetic number, because the mean of its divisors is an integer number (122304130).

Almost surely, 2^999130131 is an apocalyptic number.

999130131 is a deficient number, since it is larger than the sum of its proper divisors (468519429).

999130131 is a wasteful number, since it uses less digits than its factorization.

999130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881666 (or 1881663 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 999130131 is about 31609.0197728433. The cubic root of 999130131 is about 999.7099595513.

The spelling of 999130131 in words is "nine hundred ninety-nine million, one hundred thirty thousand, one hundred thirty-one".