421023143331 has 16 divisors (see below), whose sum is σ = 712843417600. Its totient is φ = 240584653224.

The previous prime is 421023143327. The next prime is 421023143353. The reversal of 421023143331 is 133341320124.

It is a happy number.

421023143331 is a `hidden beast` number, since 4 + 2 + 10 + 2 + 314 + 3 + 331 = 666.

It is not a de Polignac number, because 421023143331 - 2² = 421023143327 is a prime.

It is a super-2 number, since 2×421023143331² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421023143295 and 421023143304.

It is not an unprimeable number, because it can be changed into a prime (421023143381) 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, 1113817651 + ... + 1113818028.

It is an arithmetic number, because the mean of its divisors is an integer number (44552713600).

Almost surely, 2^421023143331 is an apocalyptic number.

421023143331 is a deficient number, since it is larger than the sum of its proper divisors (291820274269).

421023143331 is a wasteful number, since it uses less digits than its factorization.

421023143331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227635695 (or 2227635689 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 421023143331 its reverse (133341320124), we get a palindrome (554364463455).

The spelling of 421023143331 in words is "four hundred twenty-one billion, twenty-three million, one hundred forty-three thousand, three hundred thirty-one".