130172811 has 4 divisors (see below), whose sum is σ = 173563752. Its totient is φ = 86781872.

The previous prime is 130172789. The next prime is 130172873. The reversal of 130172811 is 118271031.

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: 118271031 = 3 ⋅39423677.

It is a cyclic number.

It is not a de Polignac number, because 130172811 - 2⁶ = 130172747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130172011) 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, 21695466 + ... + 21695471.

It is an arithmetic number, because the mean of its divisors is an integer number (43390938).

Almost surely, 2^130172811 is an apocalyptic number.

130172811 is a deficient number, since it is larger than the sum of its proper divisors (43390941).

130172811 is an equidigital number, since it uses as much as digits as its factorization.

130172811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43390940.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 130172811 is about 11409.3299978570. The cubic root of 130172811 is about 506.8040705843.

The spelling of 130172811 in words is "one hundred thirty million, one hundred seventy-two thousand, eight hundred eleven".