130031749 has 2 divisors, whose sum is σ = 130031750. Its totient is φ = 130031748.

The previous prime is 130031723. The next prime is 130031767. The reversal of 130031749 is 947130031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69472225 + 60559524 = 8335^2 + 7782^2 .

It is a cyclic number.

It is not a de Polignac number, because 130031749 - 2⁵ = 130031717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130031789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65015874 + 65015875.

It is an arithmetic number, because the mean of its divisors is an integer number (65015875).

Almost surely, 2^130031749 is an apocalyptic number.

It is an amenable number.

130031749 is a deficient number, since it is larger than the sum of its proper divisors (1).

130031749 is an equidigital number, since it uses as much as digits as its factorization.

130031749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 130031749 is about 11403.1464517474. The cubic root of 130031749 is about 506.6209380378.

The spelling of 130031749 in words is "one hundred thirty million, thirty-one thousand, seven hundred forty-nine".