31112310401 has 4 divisors (see below), whose sum is σ = 31251827712. Its totient is φ = 30972793092.

The previous prime is 31112310391. The next prime is 31112310403. The reversal of 31112310401 is 10401321113.

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 31112310401 - 2⁶ = 31112310337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31112310401.

It is not an unprimeable number, because it can be changed into a prime (31112310403) 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, 69758321 + ... + 69758766.

It is an arithmetic number, because the mean of its divisors is an integer number (7812956928).

Almost surely, 2^31112310401 is an apocalyptic number.

It is an amenable number.

31112310401 is a deficient number, since it is larger than the sum of its proper divisors (139517311).

31112310401 is a wasteful number, since it uses less digits than its factorization.

31112310401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139517310.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31112310401 its reverse (10401321113), we get a palindrome (41513631514).

The spelling of 31112310401 in words is "thirty-one billion, one hundred twelve million, three hundred ten thousand, four hundred one".