130123981 has 8 divisors (see below), whose sum is σ = 141908480. Its totient is φ = 118593072.

The previous prime is 130123921. The next prime is 130123991. The reversal of 130123981 is 189321031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130123981 - 2²³ = 121735373 is a prime.

It is a super-2 number, since 2×130123981² = 33864500862576722, 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 (130123921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62325 + ... + 64378.

It is an arithmetic number, because the mean of its divisors is an integer number (17738560).

Almost surely, 2^130123981 is an apocalyptic number.

It is an amenable number.

130123981 is a deficient number, since it is larger than the sum of its proper divisors (11784499).

130123981 is a wasteful number, since it uses less digits than its factorization.

130123981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126795.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 130123981 is about 11407.1898818245. The cubic root of 130123981 is about 506.7406924293.

The spelling of 130123981 in words is "one hundred thirty million, one hundred twenty-three thousand, nine hundred eighty-one".