31908432201 has 4 divisors (see below), whose sum is σ = 42544576272. Its totient is φ = 21272288132.

The previous prime is 31908432191. The next prime is 31908432263. The reversal of 31908432201 is 10223480913.

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 31908432201 - 2⁹ = 31908431689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31908432001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5318072031 + ... + 5318072036.

It is an arithmetic number, because the mean of its divisors is an integer number (10636144068).

Almost surely, 2^31908432201 is an apocalyptic number.

It is an amenable number.

31908432201 is a deficient number, since it is larger than the sum of its proper divisors (10636144071).

31908432201 is a wasteful number, since it uses less digits than its factorization.

31908432201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10636144070.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 31908432201 in words is "thirty-one billion, nine hundred eight million, four hundred thirty-two thousand, two hundred one".