311002214431 has 4 divisors (see below), whose sum is σ = 311135522472. Its totient is φ = 310868906392.

The previous prime is 311002214423. The next prime is 311002214443. The reversal of 311002214431 is 134412200113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134412200113 = 31 ⋅4335877423.

It is a cyclic number.

It is not a de Polignac number, because 311002214431 - 2³ = 311002214423 is a prime.

It is a super-2 number, since 2×311002214431² (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 (311002214491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66650521 + ... + 66655186.

It is an arithmetic number, because the mean of its divisors is an integer number (77783880618).

Almost surely, 2^311002214431 is an apocalyptic number.

311002214431 is a deficient number, since it is larger than the sum of its proper divisors (133308041).

311002214431 is a wasteful number, since it uses less digits than its factorization.

311002214431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133308040.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 311002214431 its reverse (134412200113), we get a palindrome (445414414544).

The spelling of 311002214431 in words is "three hundred eleven billion, two million, two hundred fourteen thousand, four hundred thirty-one".