30311402420 has 48 divisors (see below), whose sum is σ = 69090244608. Its totient is φ = 11103765120.

The previous prime is 30311402369. The next prime is 30311402447. The reversal of 30311402420 is 2420411303.

It is a super-2 number, since 2×30311402420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30311402392 and 30311402401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425966 + ... + 492005.

It is an arithmetic number, because the mean of its divisors is an integer number (1439380096).

Almost surely, 2^30311402420 is an apocalyptic number.

It is an amenable number.

30311402420 is an abundant number, since it is smaller than the sum of its proper divisors (38778842188).

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

30311402420 is a wasteful number, since it uses less digits than its factorization.

30311402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918120 (or 918118 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30311402420 its reverse (2420411303), we get a palindrome (32731813723).

The spelling of 30311402420 in words is "thirty billion, three hundred eleven million, four hundred two thousand, four hundred twenty".