311450233143 has 12 divisors (see below), whose sum is σ = 483065667960. Its totient is φ = 177971561712.

The previous prime is 311450233043. The next prime is 311450233169. The reversal of 311450233143 is 341332054113.

It is a happy number.

It is not a de Polignac number, because 311450233143 - 2¹² = 311450229047 is a prime.

It is a super-3 number, since 3×311450233143³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311450233143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311450233043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1059354388 + ... + 1059354681.

It is an arithmetic number, because the mean of its divisors is an integer number (40255472330).

Almost surely, 2^311450233143 is an apocalyptic number.

311450233143 is a deficient number, since it is larger than the sum of its proper divisors (171615434817).

311450233143 is a wasteful number, since it uses less digits than its factorization.

311450233143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118709086 (or 2118709079 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 311450233143 its reverse (341332054113), we get a palindrome (652782287256).

The spelling of 311450233143 in words is "three hundred eleven billion, four hundred fifty million, two hundred thirty-three thousand, one hundred forty-three".