1423420200431 has 4 divisors (see below), whose sum is σ = 1447545966600. Its totient is φ = 1399294434264.

The previous prime is 1423420200379. The next prime is 1423420200457. The reversal of 1423420200431 is 1340020243241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423420200431 is a prime.

It is a super-2 number, since 2×1423420200431² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1423420200431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423420200931) 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, 12062882996 + ... + 12062883113.

It is an arithmetic number, because the mean of its divisors is an integer number (361886491650).

Almost surely, 2^{1423420200431} is an apocalyptic number.

1423420200431 is a deficient number, since it is larger than the sum of its proper divisors (24125766169).

1423420200431 is an equidigital number, since it uses as much as digits as its factorization.

1423420200431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24125766168.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1423420200431 its reverse (1340020243241), we get a palindrome (2763440443672).

The spelling of 1423420200431 in words is "one trillion, four hundred twenty-three billion, four hundred twenty million, two hundred thousand, four hundred thirty-one".