31220003211030 has 48 divisors (see below), whose sum is σ = 81195462498384. Its totient is φ = 8322928635840.

The previous prime is 31220003211017. The next prime is 31220003211031. The reversal of 31220003211030 is 3011230002213.

31220003211030 is a `hidden beast` number, since 312 + 2 + 0 + 0 + 0 + 321 + 1 + 0 + 30 = 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 = 31220003210994 and 31220003211012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220003211031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49802484 + ... + 50425463.

It is an arithmetic number, because the mean of its divisors is an integer number (1691572135383).

Almost surely, 2^{31220003211030} is an apocalyptic number.

31220003211030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31220003211030 is an abundant number, since it is smaller than the sum of its proper divisors (49975459287354).

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

31220003211030 is a wasteful number, since it uses less digits than its factorization.

31220003211030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100231421 (or 100231418 counting only the distinct ones).

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

Adding to 31220003211030 its reverse (3011230002213), we get a palindrome (34231233213243).

The spelling of 31220003211030 in words is "thirty-one trillion, two hundred twenty billion, three million, two hundred eleven thousand, thirty".