129700331 has 2 divisors, whose sum is σ = 129700332. Its totient is φ = 129700330.

The previous prime is 129700321. The next prime is 129700397. The reversal of 129700331 is 133007921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129700331 is a prime.

It is a super-2 number, since 2×129700331² = 33644351723019122, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_7362215 and since 129700331 and 7362215 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129700331.

It is not a weakly prime, because it can be changed into another prime (129700301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64850165 + 64850166.

It is an arithmetic number, because the mean of its divisors is an integer number (64850166).

Almost surely, 2^129700331 is an apocalyptic number.

129700331 is a deficient number, since it is larger than the sum of its proper divisors (1).

129700331 is an equidigital number, since it uses as much as digits as its factorization.

129700331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 129700331 is about 11388.6053140848. The cubic root of 129700331 is about 506.1901556858.

It can be divided in two parts, 129700 and 331, that added together give a palindrome (130031).

The spelling of 129700331 in words is "one hundred twenty-nine million, seven hundred thousand, three hundred thirty-one".