190229731 has 4 divisors (see below), whose sum is σ = 190263600. Its totient is φ = 190195864.

The previous prime is 190229719. The next prime is 190229749. The reversal of 190229731 is 137922091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137922091 = 7229 ⋅19079.

It is a cyclic number.

It is not a de Polignac number, because 190229731 - 2¹³ = 190221539 is a prime.

It is a super-2 number, since 2×190229731² = 72374701112664722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190229761) 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, 6271 + ... + 20488.

It is an arithmetic number, because the mean of its divisors is an integer number (47565900).

Almost surely, 2^190229731 is an apocalyptic number.

190229731 is a deficient number, since it is larger than the sum of its proper divisors (33869).

190229731 is an equidigital number, since it uses as much as digits as its factorization.

190229731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33868.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 190229731 is about 13792.3794538868. The cubic root of 190229731 is about 575.1213163053.

The spelling of 190229731 in words is "one hundred ninety million, two hundred twenty-nine thousand, seven hundred thirty-one".