31425319999 has 4 divisors (see below), whose sum is σ = 31537154160. Its totient is φ = 31313485840.

The previous prime is 31425319997. The next prime is 31425320033. The reversal of 31425319999 is 99991352413.

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 31425319999 - 2¹ = 31425319997 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 (31425319993) 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, 55916659 + ... + 55917220.

It is an arithmetic number, because the mean of its divisors is an integer number (7884288540).

Almost surely, 2^31425319999 is an apocalyptic number.

31425319999 is a deficient number, since it is larger than the sum of its proper divisors (111834161).

31425319999 is a wasteful number, since it uses less digits than its factorization.

31425319999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111834160.

The product of its digits is 2361960, while the sum is 55.

The spelling of 31425319999 in words is "thirty-one billion, four hundred twenty-five million, three hundred nineteen thousand, nine hundred ninety-nine".