994395131 has 4 divisors (see below), whose sum is σ = 1005568200. Its totient is φ = 983222064.

The previous prime is 994395113. The next prime is 994395137. The reversal of 994395131 is 131593499.

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 994395131 - 2¹⁴ = 994378747 is a prime.

It is a super-2 number, since 2×994395131² = 1977643353113014322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994395137) 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, 5586401 + ... + 5586578.

It is an arithmetic number, because the mean of its divisors is an integer number (251392050).

Almost surely, 2^994395131 is an apocalyptic number.

994395131 is a deficient number, since it is larger than the sum of its proper divisors (11173069).

994395131 is a wasteful number, since it uses less digits than its factorization.

994395131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11173068.

The product of its digits is 131220, while the sum is 44.

The square root of 994395131 is about 31534.0313153900. The cubic root of 994395131 is about 998.1282089175.

The spelling of 994395131 in words is "nine hundred ninety-four million, three hundred ninety-five thousand, one hundred thirty-one".