130531949 has 2 divisors, whose sum is σ = 130531950. Its totient is φ = 130531948.

The previous prime is 130531943. The next prime is 130531963. The reversal of 130531949 is 949135031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128029225 + 2502724 = 11315^2 + 1582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130531949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130531943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65265974 + 65265975.

It is an arithmetic number, because the mean of its divisors is an integer number (65265975).

Almost surely, 2^130531949 is an apocalyptic number.

It is an amenable number.

130531949 is a deficient number, since it is larger than the sum of its proper divisors (1).

130531949 is an equidigital number, since it uses as much as digits as its factorization.

130531949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 130531949 is about 11425.0579429603. The cubic root of 130531949 is about 507.2697220214.

The spelling of 130531949 in words is "one hundred thirty million, five hundred thirty-one thousand, nine hundred forty-nine".