20312123000 has 64 divisors (see below), whose sum is σ = 51186582720. Its totient is φ = 7499856000.

The previous prime is 20312122997. The next prime is 20312123059. The reversal of 20312123000 is 32121302.

It is a happy number.

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, 768236 + ... + 794235.

It is an arithmetic number, because the mean of its divisors is an integer number (799790355).

Almost surely, 2^20312123000 is an apocalyptic number.

20312123000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312123000 is an abundant number, since it is smaller than the sum of its proper divisors (30874459720).

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

20312123000 is a wasteful number, since it uses less digits than its factorization.

20312123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562505 (or 1562491 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20312123000 its reverse (32121302), we get a palindrome (20344244302).

The spelling of 20312123000 in words is "twenty billion, three hundred twelve million, one hundred twenty-three thousand".