311430022431021 has 40 divisors (see below), whose sum is σ = 527377875775520. Its totient is φ = 181562442215328.

The previous prime is 311430022431013. The next prime is 311430022431023. The reversal of 311430022431021 is 120134220034113.

311430022431021 is a `hidden beast` number, since 3 + 1 + 1 + 4 + 300 + 2 + 24 + 310 + 21 = 666.

It is not a de Polignac number, because 311430022431021 - 2³ = 311430022431013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311430022431023) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7783006495 + ... + 7783046508.

It is an arithmetic number, because the mean of its divisors is an integer number (13184446894388).

Almost surely, 2^{311430022431021} is an apocalyptic number.

It is an amenable number.

311430022431021 is a deficient number, since it is larger than the sum of its proper divisors (215947853344499).

311430022431021 is a wasteful number, since it uses less digits than its factorization.

311430022431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15566053047 (or 15566053038 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 311430022431021 its reverse (120134220034113), we get a palindrome (431564242465134).

The spelling of 311430022431021 in words is "three hundred eleven trillion, four hundred thirty billion, twenty-two million, four hundred thirty-one thousand, twenty-one".