129731034 has 16 divisors (see below), whose sum is σ = 259668288. Its totient is φ = 43209312.

The previous prime is 129731027. The next prime is 129731051. The reversal of 129731034 is 430137921.

It is a junction number, because it is equal to n+sod(n) for n = 129730992 and 129731010.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 294 + ... + 16110.

It is an arithmetic number, because the mean of its divisors is an integer number (16229268).

Almost surely, 2^129731034 is an apocalyptic number.

129731034 is an abundant number, since it is smaller than the sum of its proper divisors (129937254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129731034 is a wasteful number, since it uses less digits than its factorization.

129731034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17189.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 129731034 is about 11389.9532044693. The cubic root of 129731034 is about 506.2300947516.

Adding to 129731034 its reverse (430137921), we get a palindrome (559868955).

The spelling of 129731034 in words is "one hundred twenty-nine million, seven hundred thirty-one thousand, thirty-four".