129188093431 has 4 divisors (see below), whose sum is σ = 129280438000. Its totient is φ = 129095748864.

The previous prime is 129188093429. The next prime is 129188093459. The reversal of 129188093431 is 134390881921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129188093431 - 2¹ = 129188093429 is a prime.

It is a super-2 number, since 2×129188093431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129188093471) 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 3 ways as a sum of consecutive naturals, for example, 46170186 + ... + 46172983.

It is an arithmetic number, because the mean of its divisors is an integer number (32320109500).

Almost surely, 2^129188093431 is an apocalyptic number.

129188093431 is a deficient number, since it is larger than the sum of its proper divisors (92344569).

129188093431 is an equidigital number, since it uses as much as digits as its factorization.

129188093431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92344568.

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 129188093431 in words is "one hundred twenty-nine billion, one hundred eighty-eight million, ninety-three thousand, four hundred thirty-one".