130312623 has 32 divisors (see below), whose sum is σ = 209387520. Its totient is φ = 70512480.

The previous prime is 130312607. The next prime is 130312627. The reversal of 130312623 is 326213031.

It is not a de Polignac number, because 130312623 - 2⁴ = 130312607 is a prime.

It is a super-3 number, since 3×130312623³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 130312623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130312627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28468 + ... + 32726.

It is an arithmetic number, because the mean of its divisors is an integer number (6543360).

Almost surely, 2^130312623 is an apocalyptic number.

130312623 is a deficient number, since it is larger than the sum of its proper divisors (79074897).

130312623 is a wasteful number, since it uses less digits than its factorization.

130312623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 130312623 is about 11415.4554442650. The cubic root of 130312623 is about 506.9854498273.

Adding to 130312623 its reverse (326213031), we get a palindrome (456525654).

The spelling of 130312623 in words is "one hundred thirty million, three hundred twelve thousand, six hundred twenty-three".