421023203431 has 8 divisors (see below), whose sum is σ = 428977683504. Its totient is φ = 413069117760.

The previous prime is 421023203423. The next prime is 421023203437. The reversal of 421023203431 is 134302320124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421023203431 - 2³ = 421023203423 is a prime.

It is a super-2 number, since 2×421023203431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421023203396 and 421023203405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421023203437) 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, 2922411 + ... + 3063091.

It is an arithmetic number, because the mean of its divisors is an integer number (53622210438).

Almost surely, 2^421023203431 is an apocalyptic number.

421023203431 is a deficient number, since it is larger than the sum of its proper divisors (7954480073).

421023203431 is a wasteful number, since it uses less digits than its factorization.

421023203431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197201.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 421023203431 its reverse (134302320124), we get a palindrome (555325523555).

The spelling of 421023203431 in words is "four hundred twenty-one billion, twenty-three million, two hundred three thousand, four hundred thirty-one".