311454123020 has 48 divisors (see below), whose sum is σ = 670549749408. Its totient is φ = 121450667520.

The previous prime is 311454122981. The next prime is 311454123023. The reversal of 311454123020 is 20321454113.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (311454123023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100502 + ... + 795618.

It is an arithmetic number, because the mean of its divisors is an integer number (13969786446).

Almost surely, 2^311454123020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311454123020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335274874704).

311454123020 is an abundant number, since it is smaller than the sum of its proper divisors (359095626388).

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

311454123020 is a wasteful number, since it uses less digits than its factorization.

311454123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695690 (or 695688 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 311454123020 its reverse (20321454113), we get a palindrome (331775577133).

The spelling of 311454123020 in words is "three hundred eleven billion, four hundred fifty-four million, one hundred twenty-three thousand, twenty".