31322013030 has 192 divisors, whose sum is σ = 102051975168. Its totient is φ = 6475150080.

The previous prime is 31322012993. The next prime is 31322013053. The reversal of 31322013030 is 3031022313.

31322013030 is a `hidden beast` number, since 313 + 220 + 130 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31322012994 and 31322013012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1353739 + ... + 1376681.

It is an arithmetic number, because the mean of its divisors is an integer number (531520704).

Almost surely, 2^31322013030 is an apocalyptic number.

31322013030 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 31322013030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51025987584).

31322013030 is an abundant number, since it is smaller than the sum of its proper divisors (70729962138).

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

31322013030 is a wasteful number, since it uses less digits than its factorization.

31322013030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23171 (or 23168 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31322013030 its reverse (3031022313), we get a palindrome (34353035343).

The spelling of 31322013030 in words is "thirty-one billion, three hundred twenty-two million, thirteen thousand, thirty".