2123311400 has 48 divisors (see below), whose sum is σ = 5641945440. Its totient is φ = 727992000.

The previous prime is 2123311381. The next prime is 2123311409. The reversal of 2123311400 is 41133212.

It is not an unprimeable number, because it can be changed into a prime (2123311409) 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, 756926 + ... + 759725.

It is an arithmetic number, because the mean of its divisors is an integer number (117540530).

Almost surely, 2^2123311400 is an apocalyptic number.

2123311400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123311400 is an abundant number, since it is smaller than the sum of its proper divisors (3518634040).

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

2123311400 is a wasteful number, since it uses less digits than its factorization.

2123311400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516674 (or 1516665 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2123311400 is about 46079.4032079410. The cubic root of 2123311400 is about 1285.3001665708.

Adding to 2123311400 its reverse (41133212), we get a palindrome (2164444612).

The spelling of 2123311400 in words is "two billion, one hundred twenty-three million, three hundred eleven thousand, four hundred".