130213981 has 4 divisors (see below), whose sum is σ = 134414464. Its totient is φ = 126013500.

The previous prime is 130213961. The next prime is 130213997. The reversal of 130213981 is 189312031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130213981 - 2⁹ = 130213469 is a prime.

It is a super-2 number, since 2×130213981² = 33911361695736722, 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 (130213961) 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, 2100195 + ... + 2100256.

It is an arithmetic number, because the mean of its divisors is an integer number (33603616).

Almost surely, 2^130213981 is an apocalyptic number.

It is an amenable number.

130213981 is a deficient number, since it is larger than the sum of its proper divisors (4200483).

130213981 is an equidigital number, since it uses as much as digits as its factorization.

130213981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200482.

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

The square root of 130213981 is about 11411.1340803620. The cubic root of 130213981 is about 506.8574942451.

The spelling of 130213981 in words is "one hundred thirty million, two hundred thirteen thousand, nine hundred eighty-one".