31368422399 has 4 divisors (see below), whose sum is σ = 31517088120. Its totient is φ = 31219756680.

The previous prime is 31368422377. The next prime is 31368422411. The reversal of 31368422399 is 99322486313.

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 31368422399 - 2¹⁶ = 31368356863 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 (31368412399) 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, 74332544 + ... + 74332965.

It is an arithmetic number, because the mean of its divisors is an integer number (7879272030).

Almost surely, 2^31368422399 is an apocalyptic number.

31368422399 is a deficient number, since it is larger than the sum of its proper divisors (148665721).

31368422399 is a wasteful number, since it uses less digits than its factorization.

31368422399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148665720.

The product of its digits is 1679616, while the sum is 50.

The spelling of 31368422399 in words is "thirty-one billion, three hundred sixty-eight million, four hundred twenty-two thousand, three hundred ninety-nine".