2231320530420 has 36 divisors (see below), whose sum is σ = 6768338942820. Its totient is φ = 595018808064.

The previous prime is 2231320530409. The next prime is 2231320530443. The reversal of 2231320530420 is 240350231322.

2231320530420 is a `hidden beast` number, since 2 + 2 + 3 + 1 + 3 + 205 + 30 + 420 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1666360847376 + 564959683044 = 1290876^2 + 751638^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×2231320530420³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6198112405 + ... + 6198112764.

Almost surely, 2^{2231320530420} is an apocalyptic number.

2231320530420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231320530420 is an abundant number, since it is smaller than the sum of its proper divisors (4537018412400).

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

2231320530420 is a wasteful number, since it uses less digits than its factorization.

2231320530420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12396225184 (or 12396225179 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 2231320530420 its reverse (240350231322), we get a palindrome (2471670761742).

The spelling of 2231320530420 in words is "two trillion, two hundred thirty-one billion, three hundred twenty million, five hundred thirty thousand, four hundred twenty".