190864031 has 4 divisors (see below), whose sum is σ = 190894200. Its totient is φ = 190833864.

The previous prime is 190864013. The next prime is 190864067. The reversal of 190864031 is 130468091.

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: 130468091 = 13 ⋅10036007.

It is a cyclic number.

It is not a de Polignac number, because 190864031 - 2²⁶ = 123755167 is a prime.

It is a super-2 number, since 2×190864031² = 72858156659137922, 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 (190864001) 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, 1541 + ... + 19598.

It is an arithmetic number, because the mean of its divisors is an integer number (47723550).

Almost surely, 2^190864031 is an apocalyptic number.

190864031 is a deficient number, since it is larger than the sum of its proper divisors (30169).

190864031 is an equidigital number, since it uses as much as digits as its factorization.

190864031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30168.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 190864031 is about 13815.3548995312. The cubic root of 190864031 is about 575.7598332838.

The spelling of 190864031 in words is "one hundred ninety million, eight hundred sixty-four thousand, thirty-one".