311420355431 has 8 divisors (see below), whose sum is σ = 325258092240. Its totient is φ = 297867932928.

The previous prime is 311420355341. The next prime is 311420355461. The reversal of 311420355431 is 134553024113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311420355431 - 2³⁸ = 36542448487 is a prime.

It is a super-2 number, since 2×311420355431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311420355461) 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, 71326346 + ... + 71330711.

It is an arithmetic number, because the mean of its divisors is an integer number (40657261530).

Almost surely, 2^311420355431 is an apocalyptic number.

311420355431 is a deficient number, since it is larger than the sum of its proper divisors (13837736809).

311420355431 is a wasteful number, since it uses less digits than its factorization.

311420355431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142657153.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 311420355431 its reverse (134553024113), we get a palindrome (445973379544).

The spelling of 311420355431 in words is "three hundred eleven billion, four hundred twenty million, three hundred fifty-five thousand, four hundred thirty-one".