31147646423 has 4 divisors (see below), whose sum is σ = 31161787368. Its totient is φ = 31133505480.

The previous prime is 31147646363. The next prime is 31147646441. The reversal of 31147646423 is 32464674113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31147646423 - 2¹⁴ = 31147630039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31147646473) 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, 7067168 + ... + 7071573.

It is an arithmetic number, because the mean of its divisors is an integer number (7790446842).

Almost surely, 2^31147646423 is an apocalyptic number.

31147646423 is a deficient number, since it is larger than the sum of its proper divisors (14140945).

31147646423 is a wasteful number, since it uses less digits than its factorization.

31147646423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14140944.

The product of its digits is 290304, while the sum is 41.

The spelling of 31147646423 in words is "thirty-one billion, one hundred forty-seven million, six hundred forty-six thousand, four hundred twenty-three".