31422738048 has 128 divisors (see below), whose sum is σ = 89966056320. Its totient is φ = 9660051456.

The previous prime is 31422738047. The next prime is 31422738089. The reversal of 31422738048 is 84083722413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (31422738047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8020186 + ... + 8024102.

It is an arithmetic number, because the mean of its divisors is an integer number (702859815).

Almost surely, 2^31422738048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31422738048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44983028160).

31422738048 is an abundant number, since it is smaller than the sum of its proper divisors (58543318272).

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

31422738048 is a wasteful number, since it uses less digits than its factorization.

31422738048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554 (or 5542 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 31422738048 in words is "thirty-one billion, four hundred twenty-two million, seven hundred thirty-eight thousand, forty-eight".