20231418 has 16 divisors (see below), whose sum is σ = 40674816. Its totient is φ = 6708480.

The previous prime is 20231417. The next prime is 20231423. The reversal of 20231418 is 81413202.

It is a junction number, because it is equal to n+sod(n) for n = 20231394 and 20231403.

It is not an unprimeable number, because it can be changed into a prime (20231417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7578 + ... + 9893.

It is an arithmetic number, because the mean of its divisors is an integer number (2542176).

Almost surely, 2^20231418 is an apocalyptic number.

20231418 is an abundant number, since it is smaller than the sum of its proper divisors (20443398).

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

20231418 is a wasteful number, since it uses less digits than its factorization.

20231418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17669.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20231418 is about 4497.9348594661. The cubic root of 20231418 is about 272.4846912254.

It can be divided in two parts, 202 and 31418, that multiplied together give a palindrome (6346436).

The spelling of 20231418 in words is "twenty million, two hundred thirty-one thousand, four hundred eighteen".