311433423420 has 48 divisors (see below), whose sum is σ = 996586956288. Its totient is φ = 71184782400.

The previous prime is 311433423401. The next prime is 311433423493. The reversal of 311433423420 is 24324334113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 370753656 + ... + 370754495.

It is an arithmetic number, because the mean of its divisors is an integer number (20762228256).

Almost surely, 2^311433423420 is an apocalyptic number.

311433423420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311433423420 is an abundant number, since it is smaller than the sum of its proper divisors (685153532868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311433423420 is a wasteful number, since it uses less digits than its factorization.

311433423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741508170 (or 741508168 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 311433423420 its reverse (24324334113), we get a palindrome (335757757533).

The spelling of 311433423420 in words is "three hundred eleven billion, four hundred thirty-three million, four hundred twenty-three thousand, four hundred twenty".