31842156416 has 64 divisors (see below), whose sum is σ = 74836469760. Its totient is φ = 13206412800.

The previous prime is 31842156349. The next prime is 31842156419. The reversal of 31842156416 is 61465124813.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31842156419) 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 7 ways as a sum of consecutive naturals, for example, 545420 + ... + 600971.

It is an arithmetic number, because the mean of its divisors is an integer number (1169319840).

Almost surely, 2^31842156416 is an apocalyptic number.

It is an amenable number.

31842156416 is an abundant number, since it is smaller than the sum of its proper divisors (42994313344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31842156416 is a wasteful number, since it uses less digits than its factorization.

31842156416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146443 (or 1146431 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The spelling of 31842156416 in words is "thirty-one billion, eight hundred forty-two million, one hundred fifty-six thousand, four hundred sixteen".