31316001 has 8 divisors (see below), whose sum is σ = 42378144. Its totient is φ = 20565600.

The previous prime is 31315993. The next prime is 31316003. The reversal of 31316001 is 10061313.

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

It is not a de Polignac number, because 31316001 - 2³ = 31315993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31316003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77700 + ... + 78101.

It is an arithmetic number, because the mean of its divisors is an integer number (5297268).

Almost surely, 2^31316001 is an apocalyptic number.

It is an amenable number.

31316001 is a deficient number, since it is larger than the sum of its proper divisors (11062143).

31316001 is a wasteful number, since it uses less digits than its factorization.

31316001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155871.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 31316001 is about 5596.0701389457. The cubic root of 31316001 is about 315.2018560072.

Adding to 31316001 its reverse (10061313), we get a palindrome (41377314).

The spelling of 31316001 in words is "thirty-one million, three hundred sixteen thousand, one".