31404404112113 has 4 divisors (see below), whose sum is σ = 31409090643828. Its totient is φ = 31399717580400.

The previous prime is 31404404112101. The next prime is 31404404112119. The reversal of 31404404112113 is 31121140440413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13945235486224 + 17459168625889 = 3734332^2 + 4178417^2 .

It is a cyclic number.

It is not a de Polignac number, because 31404404112113 - 2¹⁶ = 31404404046577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31404404112119) 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, 2343255806 + ... + 2343269207.

It is an arithmetic number, because the mean of its divisors is an integer number (7852272660957).

Almost surely, 2^{31404404112113} is an apocalyptic number.

It is an amenable number.

31404404112113 is a deficient number, since it is larger than the sum of its proper divisors (4686531715).

31404404112113 is an equidigital number, since it uses as much as digits as its factorization.

31404404112113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686531714.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 31404404112113 its reverse (31121140440413), we get a palindrome (62525544552526).

The spelling of 31404404112113 in words is "thirty-one trillion, four hundred four billion, four hundred four million, one hundred twelve thousand, one hundred thirteen".