190131087 has 16 divisors (see below), whose sum is σ = 269526528. Its totient is φ = 118953120.

The previous prime is 190131037. The next prime is 190131089. The reversal of 190131087 is 780131091.

It is not a de Polignac number, because 190131087 - 2¹⁰ = 190130063 is a prime.

It is a super-2 number, since 2×190131087² = 72299660487603138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190131089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22339 + ... + 29652.

It is an arithmetic number, because the mean of its divisors is an integer number (16845408).

Almost surely, 2^190131087 is an apocalyptic number.

190131087 is a deficient number, since it is larger than the sum of its proper divisors (79395441).

190131087 is a wasteful number, since it uses less digits than its factorization.

190131087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52070.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 190131087 is about 13788.8029574724. The cubic root of 190131087 is about 575.0218890218.

It can be divided in two parts, 19013 and 1087, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 190131087 in words is "one hundred ninety million, one hundred thirty-one thousand, eighty-seven".