31316101 has 4 divisors (see below), whose sum is σ = 31344192. Its totient is φ = 31288012.

The previous prime is 31316093. The next prime is 31316111. The reversal of 31316101 is 10161313.

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 31316101 - 2³ = 31316093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31316111) 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, 12301 + ... + 14626.

It is an arithmetic number, because the mean of its divisors is an integer number (7836048).

Almost surely, 2^31316101 is an apocalyptic number.

It is an amenable number.

31316101 is a deficient number, since it is larger than the sum of its proper divisors (28091).

31316101 is a wasteful number, since it uses less digits than its factorization.

31316101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28090.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 31316101 is about 5596.0790737801. The cubic root of 31316101 is about 315.2021915136.

Adding to 31316101 its reverse (10161313), we get a palindrome (41477414).

The spelling of 31316101 in words is "thirty-one million, three hundred sixteen thousand, one hundred one".