311433220042 has 16 divisors (see below), whose sum is σ = 533895553152. Its totient is φ = 133468871760.

The previous prime is 311433220039. The next prime is 311433220099. The reversal of 311433220042 is 240022334113.

It is a junction number, because it is equal to n+sod(n) for n = 311433219989 and 311433220016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698403 + ... + 1053865.

It is an arithmetic number, because the mean of its divisors is an integer number (33368472072).

Almost surely, 2^311433220042 is an apocalyptic number.

311433220042 is a deficient number, since it is larger than the sum of its proper divisors (222462333110).

311433220042 is a wasteful number, since it uses less digits than its factorization.

311433220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418053.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 311433220042 its reverse (240022334113), we get a palindrome (551455554155).

The spelling of 311433220042 in words is "three hundred eleven billion, four hundred thirty-three million, two hundred twenty thousand, forty-two".