31303112101 has 8 divisors (see below), whose sum is σ = 31414621784. Its totient is φ = 31191713280.

The previous prime is 31303112081. The next prime is 31303112117. The reversal of 31303112101 is 10121130313.

It can be written as a sum of positive squares in 4 ways, for example, as 518655076 + 30784457025 = 22774^2 + 175455^2 .

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 31303112101 - 2²⁷ = 31168894373 is a prime.

It is a super-3 number, since 3×31303112101³ (a number of 32 digits) contains 333 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 (31303112131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560041 + ... + 613393.

It is an arithmetic number, because the mean of its divisors is an integer number (3926827723).

Almost surely, 2^31303112101 is an apocalyptic number.

It is an amenable number.

31303112101 is a deficient number, since it is larger than the sum of its proper divisors (111509683).

31303112101 is a wasteful number, since it uses less digits than its factorization.

31303112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55431.

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

Adding to 31303112101 its reverse (10121130313), we get a palindrome (41424242414).

The spelling of 31303112101 in words is "thirty-one billion, three hundred three million, one hundred twelve thousand, one hundred one".