31222402134 has 128 divisors (see below), whose sum is σ = 79443984384. Its totient is φ = 7945344000.

The previous prime is 31222402129. The next prime is 31222402171. The reversal of 31222402134 is 43120422213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5909574 + ... + 5914854.

It is an arithmetic number, because the mean of its divisors is an integer number (620656128).

Almost surely, 2^31222402134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31222402134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39721992192).

31222402134 is an abundant number, since it is smaller than the sum of its proper divisors (48221582250).

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

31222402134 is a wasteful number, since it uses less digits than its factorization.

31222402134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31222402134 its reverse (43120422213), we get a palindrome (74342824347).

The spelling of 31222402134 in words is "thirty-one billion, two hundred twenty-two million, four hundred two thousand, one hundred thirty-four".