311431032020422 has 32 divisors (see below), whose sum is σ = 468080299814400. Its totient is φ = 155404600660800.

The previous prime is 311431032020399. The next prime is 311431032020431. The reversal of 311431032020422 is 224020230134113.

It is a super-2 number, since 2×311431032020422² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17186185522 + ... + 17186203642.

It is an arithmetic number, because the mean of its divisors is an integer number (14627509369200).

Almost surely, 2^{311431032020422} is an apocalyptic number.

311431032020422 is a deficient number, since it is larger than the sum of its proper divisors (156649267793978).

311431032020422 is a wasteful number, since it uses less digits than its factorization.

311431032020422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26452.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 311431032020422 its reverse (224020230134113), we get a palindrome (535451262154535).

The spelling of 311431032020422 in words is "three hundred eleven trillion, four hundred thirty-one billion, thirty-two million, twenty thousand, four hundred twenty-two".