423946791131 has 4 divisors (see below), whose sum is σ = 423948095232. Its totient is φ = 423945487032.

The previous prime is 423946791091. The next prime is 423946791137. The reversal of 423946791131 is 131197649324.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 423946791131 - 2⁶ = 423946791067 is a prime.

It is a super-2 number, since 2×423946791131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423946791131.

It is not an unprimeable number, because it can be changed into a prime (423946791137) 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, 273581 + ... + 960593.

It is an arithmetic number, because the mean of its divisors is an integer number (105987023808).

Almost surely, 2^423946791131 is an apocalyptic number.

423946791131 is a deficient number, since it is larger than the sum of its proper divisors (1304101).

423946791131 is an equidigital number, since it uses as much as digits as its factorization.

423946791131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304100.

The product of its digits is 979776, while the sum is 50.

The spelling of 423946791131 in words is "four hundred twenty-three billion, nine hundred forty-six million, seven hundred ninety-one thousand, one hundred thirty-one".