1000131169 has 2 divisors, whose sum is σ = 1000131170. Its totient is φ = 1000131168.

The previous prime is 1000131113. The next prime is 1000131203. The reversal of 1000131169 is 9611310001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771728400 + 228402769 = 27780^2 + 15113^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000131169 - 2⁹ = 1000130657 is a prime.

It is a super-2 number, since 2×1000131169² = 2000524710410613122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000101169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500065584 + 500065585.

It is an arithmetic number, because the mean of its divisors is an integer number (500065585).

Almost surely, 2^1000131169 is an apocalyptic number.

It is an amenable number.

1000131169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000131169 is an equidigital number, since it uses as much as digits as its factorization.

1000131169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1000131169 is about 31624.8504976703. The cubic root of 1000131169 is about 1000.0437210884.

The spelling of 1000131169 in words is "one billion, one hundred thirty-one thousand, one hundred sixty-nine".