312929129 has 4 divisors (see below), whose sum is σ = 313224576. Its totient is φ = 312633684.

The previous prime is 312929117. The next prime is 312929131. The reversal of 312929129 is 921929213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312929129 - 2⁸ = 312928873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312929092 and 312929101.

It is not an unprimeable number, because it can be changed into a prime (312923129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146129 + ... + 148254.

It is an arithmetic number, because the mean of its divisors is an integer number (78306144).

Almost surely, 2^312929129 is an apocalyptic number.

It is an amenable number.

312929129 is a deficient number, since it is larger than the sum of its proper divisors (295447).

312929129 is a wasteful number, since it uses less digits than its factorization.

312929129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295446.

The product of its digits is 17496, while the sum is 38.

The square root of 312929129 is about 17689.8029666811. The cubic root of 312929129 is about 678.9148848247.

The spelling of 312929129 in words is "three hundred twelve million, nine hundred twenty-nine thousand, one hundred twenty-nine".