31323201030 has 144 divisors (see below), whose sum is σ = 90165413520. Its totient is φ = 7538509440.

The previous prime is 31323201011. The next prime is 31323201043. The reversal of 31323201030 is 3010232313.

31323201030 is a `hidden beast` number, since 313 + 2 + 320 + 1 + 0 + 30 = 666.

It is a super-2 number, since 2×31323201030² (a number of 22 digits) contains 22 as substring.

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 = 31323200994 and 31323201012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1503364 + ... + 1524056.

It is an arithmetic number, because the mean of its divisors is an integer number (626148705).

Almost surely, 2^31323201030 is an apocalyptic number.

31323201030 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 31323201030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45082706760).

31323201030 is an abundant number, since it is smaller than the sum of its proper divisors (58842212490).

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

31323201030 is a wasteful number, since it uses less digits than its factorization.

31323201030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20867 (or 20853 counting only the distinct ones).

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

Adding to 31323201030 its reverse (3010232313), we get a palindrome (34333433343).

The spelling of 31323201030 in words is "thirty-one billion, three hundred twenty-three million, two hundred one thousand, thirty".