311224130040021 has 16 divisors (see below), whose sum is σ = 463217309829120. Its totient is φ = 184234157316720.

The previous prime is 311224130040011. The next prime is 311224130040073. The reversal of 311224130040021 is 120040031422113.

It is not a de Polignac number, because 311224130040021 - 2³⁸ = 310949252133077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311224130039973 and 311224130040000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311224130040001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109663187461 + ... + 109663190298.

It is an arithmetic number, because the mean of its divisors is an integer number (28951081864320).

Almost surely, 2^{311224130040021} is an apocalyptic number.

It is an amenable number.

311224130040021 is a deficient number, since it is larger than the sum of its proper divisors (151993179789099).

311224130040021 is a wasteful number, since it uses less digits than its factorization.

311224130040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219326377816.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 311224130040021 its reverse (120040031422113), we get a palindrome (431264161462134).

The spelling of 311224130040021 in words is "three hundred eleven trillion, two hundred twenty-four billion, one hundred thirty million, forty thousand, twenty-one".