423420321213013 has 4 divisors (see below), whose sum is σ = 429220599585868. Its totient is φ = 417620042840160.

The previous prime is 423420321212983. The next prime is 423420321213023. The reversal of 423420321213013 is 310312123024324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261845537816164 + 161574783396849 = 16181642^2 + 12711207^2 .

It is a cyclic number.

It is not a de Polignac number, because 423420321213013 - 2²¹ = 423420319115861 is a prime.

It is a super-2 number, since 2×423420321213013² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423420321213023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2900139186318 + ... + 2900139186463.

It is an arithmetic number, because the mean of its divisors is an integer number (107305149896467).

Almost surely, 2^{423420321213013} is an apocalyptic number.

It is an amenable number.

423420321213013 is a deficient number, since it is larger than the sum of its proper divisors (5800278372855).

423420321213013 is an equidigital number, since it uses as much as digits as its factorization.

423420321213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5800278372854.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 423420321213013 its reverse (310312123024324), we get a palindrome (733732444237337).

The spelling of 423420321213013 in words is "four hundred twenty-three trillion, four hundred twenty billion, three hundred twenty-one million, two hundred thirteen thousand, thirteen".