30311430021240 has 64 divisors (see below), whose sum is σ = 90934670131200. Its totient is φ = 8083014221952.

The previous prime is 30311430021203. The next prime is 30311430021251. The reversal of 30311430021240 is 4212003411303.

It is a happy number.

It is a super-2 number, since 2×30311430021240² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30311430021240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43630921 + ... + 44320199.

It is an arithmetic number, because the mean of its divisors is an integer number (1420854220800).

Almost surely, 2^{30311430021240} is an apocalyptic number.

30311430021240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30311430021240 is an abundant number, since it is smaller than the sum of its proper divisors (60623240109960).

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

30311430021240 is a wasteful number, since it uses less digits than its factorization.

30311430021240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055756 (or 1055752 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 30311430021240 its reverse (4212003411303), we get a palindrome (34523433432543).

The spelling of 30311430021240 in words is "thirty trillion, three hundred eleven billion, four hundred thirty million, twenty-one thousand, two hundred forty".