2311221431052 has 36 divisors (see below), whose sum is σ = 5842876742976. Its totient is φ = 770325046560.

The previous prime is 2311221431017. The next prime is 2311221431081. The reversal of 2311221431052 is 2501341221132.

It is a happy number.

2311221431052 is a `hidden beast` number, since 2 + 3 + 1 + 1 + 221 + 431 + 0 + 5 + 2 = 666.

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

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 11 ways as a sum of consecutive naturals, for example, 3077724 + ... + 3754307.

Almost surely, 2^{2311221431052} is an apocalyptic number.

It is an amenable number.

2311221431052 is an abundant number, since it is smaller than the sum of its proper divisors (3531655311924).

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

2311221431052 is a wasteful number, since it uses less digits than its factorization.

2311221431052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6841438 (or 6841433 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 2311221431052 its reverse (2501341221132), we get a palindrome (4812562652184).

The spelling of 2311221431052 in words is "two trillion, three hundred eleven billion, two hundred twenty-one million, four hundred thirty-one thousand, fifty-two".