190808031 has 4 divisors (see below), whose sum is σ = 254410712. Its totient is φ = 127205352.

The previous prime is 190807997. The next prime is 190808041. The reversal of 190808031 is 130808091.

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

It is not a de Polignac number, because 190808031 - 2¹³ = 190799839 is a prime.

It is a super-2 number, since 2×190808031² = 72815409388193922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190808031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190808041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31801336 + ... + 31801341.

It is an arithmetic number, because the mean of its divisors is an integer number (63602678).

Almost surely, 2^190808031 is an apocalyptic number.

190808031 is a deficient number, since it is larger than the sum of its proper divisors (63602681).

190808031 is an equidigital number, since it uses as much as digits as its factorization.

190808031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63602680.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 190808031 is about 13813.3280204301. The cubic root of 190808031 is about 575.7035179681.

The spelling of 190808031 in words is "one hundred ninety million, eight hundred eight thousand, thirty-one".