129031396 has 24 divisors (see below), whose sum is σ = 245545664. Its totient is φ = 58972320.

The previous prime is 129031373. The next prime is 129031429. The reversal of 129031396 is 693130921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6690 + ... + 17401.

Almost surely, 2^129031396 is an apocalyptic number.

It is an amenable number.

129031396 is a deficient number, since it is larger than the sum of its proper divisors (116514268).

129031396 is a wasteful number, since it uses less digits than its factorization.

129031396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24211 (or 24209 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 129031396 is about 11359.1987393478. The cubic root of 129031396 is about 505.3184228437.

The spelling of 129031396 in words is "one hundred twenty-nine million, thirty-one thousand, three hundred ninety-six".