129383577931 has 8 divisors (see below), whose sum is σ = 132477816240. Its totient is φ = 126293217792.

The previous prime is 129383577929. The next prime is 129383577997. The reversal of 129383577931 is 139775383921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129383577931 - 2¹ = 129383577929 is a prime.

It is a super-2 number, since 2×129383577931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129383577331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901966 + ... + 1035523.

It is an arithmetic number, because the mean of its divisors is an integer number (16559727030).

Almost surely, 2^129383577931 is an apocalyptic number.

129383577931 is a deficient number, since it is larger than the sum of its proper divisors (3094238309).

129383577931 is a wasteful number, since it uses less digits than its factorization.

129383577931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939085.

The product of its digits is 8573040, while the sum is 58.

The spelling of 129383577931 in words is "one hundred twenty-nine billion, three hundred eighty-three million, five hundred seventy-seven thousand, nine hundred thirty-one".