130040923 has 4 divisors (see below), whose sum is σ = 130368880. Its totient is φ = 129712968.

The previous prime is 130040909. The next prime is 130040927. The reversal of 130040923 is 329040031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130040923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130040894 and 130040903.

It is not an unprimeable number, because it can be changed into a prime (130040927) 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, 163383 + ... + 164176.

It is an arithmetic number, because the mean of its divisors is an integer number (32592220).

Almost surely, 2^130040923 is an apocalyptic number.

130040923 is a deficient number, since it is larger than the sum of its proper divisors (327957).

130040923 is an equidigital number, since it uses as much as digits as its factorization.

130040923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327956.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 130040923 is about 11403.5487020488. The cubic root of 130040923 is about 506.6328521312.

Adding to 130040923 its reverse (329040031), we get a palindrome (459080954).

The spelling of 130040923 in words is "one hundred thirty million, forty thousand, nine hundred twenty-three".