31427084113 has 4 divisors (see below), whose sum is σ = 31434655588. Its totient is φ = 31419512640.

The previous prime is 31427084107. The next prime is 31427084131. The reversal of 31427084113 is 31148072413.

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 12743474769 + 18683609344 = 112887^2 + 136688^2 .

It is a cyclic number.

It is not a de Polignac number, because 31427084113 - 2²¹ = 31424986961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31427084413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3779508 + ... + 3787813.

It is an arithmetic number, because the mean of its divisors is an integer number (7858663897).

Almost surely, 2^31427084113 is an apocalyptic number.

It is an amenable number.

31427084113 is a deficient number, since it is larger than the sum of its proper divisors (7571475).

31427084113 is an equidigital number, since it uses as much as digits as its factorization.

31427084113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571474.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 31427084113 in words is "thirty-one billion, four hundred twenty-seven million, eighty-four thousand, one hundred thirteen".