20230031400 has 192 divisors, whose sum is σ = 65613300480. Its totient is φ = 5150822400.

The previous prime is 20230031321. The next prime is 20230031453. The reversal of 20230031400 is 413003202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20230031400.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1147452 + ... + 1164948.

It is an arithmetic number, because the mean of its divisors is an integer number (341735940).

Almost surely, 2^20230031400 is an apocalyptic number.

20230031400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20230031400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32806650240).

20230031400 is an abundant number, since it is smaller than the sum of its proper divisors (45383269080).

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

20230031400 is a wasteful number, since it uses less digits than its factorization.

20230031400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17604 (or 17595 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20230031400 its reverse (413003202), we get a palindrome (20643034602).

The spelling of 20230031400 in words is "twenty billion, two hundred thirty million, thirty-one thousand, four hundred".