311464531145 has 4 divisors (see below), whose sum is σ = 373757437380. Its totient is φ = 249171624912.

The previous prime is 311464531111. The next prime is 311464531241. The reversal of 311464531145 is 541135464113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46524764416 + 264939766729 = 215696^2 + 514723^2 .

It is a cyclic number.

It is not a de Polignac number, because 311464531145 - 2⁸ = 311464530889 is a prime.

It is a super-2 number, since 2×311464531145² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311464531099 and 311464531108.

It is an unprimeable number.

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, 31146453110 + ... + 31146453119.

It is an arithmetic number, because the mean of its divisors is an integer number (93439359345).

Almost surely, 2^311464531145 is an apocalyptic number.

It is an amenable number.

311464531145 is a deficient number, since it is larger than the sum of its proper divisors (62292906235).

311464531145 is an equidigital number, since it uses as much as digits as its factorization.

311464531145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62292906234.

The product of its digits is 86400, while the sum is 38.

Adding to 311464531145 its reverse (541135464113), we get a palindrome (852599995258).

The spelling of 311464531145 in words is "three hundred eleven billion, four hundred sixty-four million, five hundred thirty-one thousand, one hundred forty-five".