130731031 has 2 divisors, whose sum is σ = 130731032. Its totient is φ = 130731030.

The previous prime is 130730993. The next prime is 130731047. The reversal of 130731031 is 130137031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 130731031 - 2⁹ = 130730519 is a prime.

It is a super-2 number, since 2×130731031² = 34181204932645922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130731131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65365515 + 65365516.

It is an arithmetic number, because the mean of its divisors is an integer number (65365516).

Almost surely, 2^130731031 is an apocalyptic number.

130731031 is a deficient number, since it is larger than the sum of its proper divisors (1).

130731031 is an equidigital number, since it uses as much as digits as its factorization.

130731031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 130731031 is about 11433.7671394864. The cubic root of 130731031 is about 507.5274800492.

Adding to 130731031 its reverse (130137031), we get a palindrome (260868062).

The spelling of 130731031 in words is "one hundred thirty million, seven hundred thirty-one thousand, thirty-one".