31023211230 has 192 divisors, whose sum is σ = 89272834560. Its totient is φ = 7412256000.

The previous prime is 31023211169. The next prime is 31023211259. The reversal of 31023211230 is 3211232013.

31023211230 is a `hidden beast` number, since 310 + 2 + 321 + 1 + 2 + 30 = 666.

It is a super-2 number, since 2×31023211230² (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 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 95 ways as a sum of consecutive naturals, for example, 20778364 + ... + 20779856.

It is an arithmetic number, because the mean of its divisors is an integer number (464962680).

Almost surely, 2^31023211230 is an apocalyptic number.

31023211230 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 31023211230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44636417280).

31023211230 is an abundant number, since it is smaller than the sum of its proper divisors (58249623330).

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

31023211230 is a wasteful number, since it uses less digits than its factorization.

31023211230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31023211230 its reverse (3211232013), we get a palindrome (34234443243).

The spelling of 31023211230 in words is "thirty-one billion, twenty-three million, two hundred eleven thousand, two hundred thirty".