311524431442 has 32 divisors (see below), whose sum is σ = 545109840000. Its totient is φ = 133469031024.

The previous prime is 311524431409. The next prime is 311524431487. The reversal of 311524431442 is 244134425113.

It is a super-2 number, since 2×311524431442² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311524431398 and 311524431407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2194288 + ... + 2331940.

It is an arithmetic number, because the mean of its divisors is an integer number (17034682500).

Almost surely, 2^311524431442 is an apocalyptic number.

311524431442 is a deficient number, since it is larger than the sum of its proper divisors (233585408558).

311524431442 is a wasteful number, since it uses less digits than its factorization.

311524431442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140975 (or 140961 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

Adding to 311524431442 its reverse (244134425113), we get a palindrome (555658856555).

The spelling of 311524431442 in words is "three hundred eleven billion, five hundred twenty-four million, four hundred thirty-one thousand, four hundred forty-two".