130019623 has 4 divisors (see below), whose sum is σ = 131307048. Its totient is φ = 128732200.

The previous prime is 130019599. The next prime is 130019633. The reversal of 130019623 is 326910031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326910031 = 7 ⋅46701433.

It is a cyclic number.

It is not a de Polignac number, because 130019623 - 2²¹ = 127922471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130019633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643561 + ... + 643762.

It is an arithmetic number, because the mean of its divisors is an integer number (32826762).

Almost surely, 2^130019623 is an apocalyptic number.

130019623 is a deficient number, since it is larger than the sum of its proper divisors (1287425).

130019623 is a wasteful number, since it uses less digits than its factorization.

130019623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287424.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 130019623 is about 11402.6147439962. The cubic root of 130019623 is about 506.6051893803.

Adding to 130019623 its reverse (326910031), we get a palindrome (456929654).

The spelling of 130019623 in words is "one hundred thirty million, nineteen thousand, six hundred twenty-three".