31112404013 has 8 divisors (see below), whose sum is σ = 31618532832. Its totient is φ = 30607503696.

The previous prime is 31112404009. The next prime is 31112404067. The reversal of 31112404013 is 31040421113.

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 31112404013 - 2² = 31112404009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112404093) 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, 255995 + ... + 357432.

It is an arithmetic number, because the mean of its divisors is an integer number (3952316604).

Almost surely, 2^31112404013 is an apocalyptic number.

It is an amenable number.

31112404013 is a deficient number, since it is larger than the sum of its proper divisors (506128819).

31112404013 is an equidigital number, since it uses as much as digits as its factorization.

31112404013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614251.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31112404013 its reverse (31040421113), we get a palindrome (62152825126).

The spelling of 31112404013 in words is "thirty-one billion, one hundred twelve million, four hundred four thousand, thirteen".