195131029 has 4 divisors (see below), whose sum is σ = 195208876. Its totient is φ = 195053184.

The previous prime is 195131023. The next prime is 195131039. The reversal of 195131029 is 920131591.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127644804 + 67486225 = 11298^2 + 8215^2 .

It is a cyclic number.

It is not a de Polignac number, because 195131029 - 2²⁷ = 60913301 is a prime.

It is a super-2 number, since 2×195131029² = 76152236957197682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195131023) 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, 35034 + ... + 40219.

It is an arithmetic number, because the mean of its divisors is an integer number (48802219).

Almost surely, 2^195131029 is an apocalyptic number.

It is an amenable number.

195131029 is a deficient number, since it is larger than the sum of its proper divisors (77847).

195131029 is an equidigital number, since it uses as much as digits as its factorization.

195131029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77846.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 195131029 is about 13968.9308467041. The cubic root of 195131029 is about 580.0188549162.

The spelling of 195131029 in words is "one hundred ninety-five million, one hundred thirty-one thousand, twenty-nine".