31378750065039 has 8 divisors (see below), whose sum is σ = 45056666760112. Its totient is φ = 19310000040000.

The previous prime is 31378750065037. The next prime is 31378750065181. The reversal of 31378750065039 is 93056005787313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31378750065039 - 2¹ = 31378750065037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31378750065039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31378750065037) 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, 402291667462 + ... + 402291667539.

It is an arithmetic number, because the mean of its divisors is an integer number (5632083345014).

Almost surely, 2^{31378750065039} is an apocalyptic number.

31378750065039 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

31378750065039 is a deficient number, since it is larger than the sum of its proper divisors (13677916695073).

31378750065039 is a wasteful number, since it uses less digits than its factorization.

31378750065039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804583335017.

The product of its (nonzero) digits is 14288400, while the sum is 57.

The spelling of 31378750065039 in words is "thirty-one trillion, three hundred seventy-eight billion, seven hundred fifty million, sixty-five thousand, thirty-nine".