31322030430 has 128 divisors (see below), whose sum is σ = 80234053632. Its totient is φ = 7808790528.

The previous prime is 31322030353. The next prime is 31322030473. The reversal of 31322030430 is 3403022313.

It is a junction number, because it is equal to n+sod(n) for n = 31322030397 and 31322030406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5689059 + ... + 5694561.

It is an arithmetic number, because the mean of its divisors is an integer number (626828544).

Almost surely, 2^31322030430 is an apocalyptic number.

31322030430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31322030430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40117026816).

31322030430 is an abundant number, since it is smaller than the sum of its proper divisors (48912023202).

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

31322030430 is a wasteful number, since it uses less digits than its factorization.

31322030430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5722.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 31322030430 its reverse (3403022313), we get a palindrome (34725052743).

The spelling of 31322030430 in words is "thirty-one billion, three hundred twenty-two million, thirty thousand, four hundred thirty".