31608011226 has 64 divisors (see below), whose sum is σ = 73068428160. Its totient is φ = 9008732160.

The previous prime is 31608011213. The next prime is 31608011249. The reversal of 31608011226 is 62211080613.

It is a junction number, because it is equal to n+sod(n) for n = 31608011193 and 31608011202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1828110 + ... + 1845318.

It is an arithmetic number, because the mean of its divisors is an integer number (1141694190).

Almost surely, 2^31608011226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31608011226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36534214080).

31608011226 is an abundant number, since it is smaller than the sum of its proper divisors (41460416934).

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

31608011226 is a wasteful number, since it uses less digits than its factorization.

31608011226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18879.

The product of its (nonzero) digits is 3456, while the sum is 30.

Adding to 31608011226 its reverse (62211080613), we get a palindrome (93819091839).

The spelling of 31608011226 in words is "thirty-one billion, six hundred eight million, eleven thousand, two hundred twenty-six".