940904131 has 2 divisors, whose sum is σ = 940904132. Its totient is φ = 940904130.

The previous prime is 940904119. The next prime is 940904137. The reversal of 940904131 is 131409049.

It is a strong prime.

It is an emirp because it is prime and its reverse (131409049) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 940904131 - 2⁵ = 940904099 is a prime.

It is a super-2 number, since 2×940904131² = 1770601167465730322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 940904093 and 940904102.

It is not a weakly prime, because it can be changed into another prime (940904137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470452065 + 470452066.

It is an arithmetic number, because the mean of its divisors is an integer number (470452066).

Almost surely, 2^940904131 is an apocalyptic number.

940904131 is a deficient number, since it is larger than the sum of its proper divisors (1).

940904131 is an equidigital number, since it uses as much as digits as its factorization.

940904131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 940904131 is about 30674.1606405131. The cubic root of 940904131 is about 979.9000769284.

The spelling of 940904131 in words is "nine hundred forty million, nine hundred four thousand, one hundred thirty-one".