427409819431 has 4 divisors (see below), whose sum is σ = 488468365072. Its totient is φ = 366351273792.

The previous prime is 427409819413. The next prime is 427409819437. The reversal of 427409819431 is 134918904724.

It is a happy number.

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

It is not a de Polignac number, because 427409819431 - 2⁹ = 427409818919 is a prime.

It is a super-2 number, since 2×427409819431² (a number of 24 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 (427409819437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30529272810 + ... + 30529272823.

It is an arithmetic number, because the mean of its divisors is an integer number (122117091268).

Almost surely, 2^427409819431 is an apocalyptic number.

427409819431 is a deficient number, since it is larger than the sum of its proper divisors (61058545641).

427409819431 is an equidigital number, since it uses as much as digits as its factorization.

427409819431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61058545640.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 427409819431 in words is "four hundred twenty-seven billion, four hundred nine million, eight hundred nineteen thousand, four hundred thirty-one".