900445131 has 12 divisors (see below), whose sum is σ = 1369098120. Its totient is φ = 568702080.

The previous prime is 900445121. The next prime is 900445151. The reversal of 900445131 is 131544009.

900445131 is a `hidden beast` number, since 90 + 0 + 445 + 131 = 666.

It is not a de Polignac number, because 900445131 - 2⁶ = 900445067 is a prime.

It is a super-2 number, since 2×900445131² = 1621602867883214322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 900445095 and 900445104.

It is not an unprimeable number, because it can be changed into a prime (900445121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2632710 + ... + 2633051.

It is an arithmetic number, because the mean of its divisors is an integer number (114091510).

Almost surely, 2^900445131 is an apocalyptic number.

900445131 is a deficient number, since it is larger than the sum of its proper divisors (468652989).

900445131 is a wasteful number, since it uses less digits than its factorization.

900445131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265786 (or 5265783 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 900445131 is about 30007.4179329045. The cubic root of 900445131 is about 965.6485321692.

The spelling of 900445131 in words is "nine hundred million, four hundred forty-five thousand, one hundred thirty-one".