311430240231442 has 16 divisors (see below), whose sum is σ = 487460823558912. Its totient is φ = 148943432249920.

The previous prime is 311430240231427. The next prime is 311430240231443. The reversal of 311430240231442 is 244132042034113.

It is a super-2 number, since 2×311430240231442² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311430240231398 and 311430240231407.

It is not an unprimeable number, because it can be changed into a prime (311430240231443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28567159 + ... + 37933402.

It is an arithmetic number, because the mean of its divisors is an integer number (30466301472432).

Almost surely, 2^{311430240231442} is an apocalyptic number.

311430240231442 is a deficient number, since it is larger than the sum of its proper divisors (176030583327470).

311430240231442 is a wasteful number, since it uses less digits than its factorization.

311430240231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66602393.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 311430240231442 its reverse (244132042034113), we get a palindrome (555562282265555).

The spelling of 311430240231442 in words is "three hundred eleven trillion, four hundred thirty billion, two hundred forty million, two hundred thirty-one thousand, four hundred forty-two".