421343420331131 has 4 divisors (see below), whose sum is σ = 427277834702064. Its totient is φ = 415409005960200.

The previous prime is 421343420331107. The next prime is 421343420331133. The reversal of 421343420331131 is 131133024343124.

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

It is a cyclic number.

It is not a de Polignac number, because 421343420331131 - 2³⁴ = 421326240461947 is a prime.

It is a super-2 number, since 2×421343420331131² (a number of 30 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 = 421343420331091 and 421343420331100.

It is not an unprimeable number, because it can be changed into a prime (421343420331133) 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, 2967207185360 + ... + 2967207185501.

It is an arithmetic number, because the mean of its divisors is an integer number (106819458675516).

Almost surely, 2^{421343420331131} is an apocalyptic number.

421343420331131 is a deficient number, since it is larger than the sum of its proper divisors (5934414370933).

421343420331131 is an equidigital number, since it uses as much as digits as its factorization.

421343420331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5934414370932.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 421343420331131 its reverse (131133024343124), we get a palindrome (552476444674255).

The spelling of 421343420331131 in words is "four hundred twenty-one trillion, three hundred forty-three billion, four hundred twenty million, three hundred thirty-one thousand, one hundred thirty-one".