130030981 has 2 divisors, whose sum is σ = 130030982. Its totient is φ = 130030980.

The previous prime is 130030969. The next prime is 130030991. The reversal of 130030981 is 189030031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118701025 + 11329956 = 10895^2 + 3366^2 .

It is a cyclic number.

It is not a de Polignac number, because 130030981 - 2¹¹ = 130028933 is a prime.

It is a super-3 number, since 3×130030981³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130030921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65015490 + 65015491.

It is an arithmetic number, because the mean of its divisors is an integer number (65015491).

Almost surely, 2^130030981 is an apocalyptic number.

It is an amenable number.

130030981 is a deficient number, since it is larger than the sum of its proper divisors (1).

130030981 is an equidigital number, since it uses as much as digits as its factorization.

130030981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 130030981 is about 11403.1127767816. The cubic root of 130030981 is about 506.6199406259.

The spelling of 130030981 in words is "one hundred thirty million, thirty thousand, nine hundred eighty-one".