305432401423 has 4 divisors (see below), whose sum is σ = 305904476880. Its totient is φ = 304960325968.

The previous prime is 305432401409. The next prime is 305432401471. The reversal of 305432401423 is 324104234503.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324104234503 = 7 ⋅46300604929.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305432401423 is a prime.

It is a super-2 number, since 2×305432401423² (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 (305432401223) 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, 236036758 + ... + 236038051.

It is an arithmetic number, because the mean of its divisors is an integer number (76476119220).

Almost surely, 2^305432401423 is an apocalyptic number.

305432401423 is a deficient number, since it is larger than the sum of its proper divisors (472075457).

305432401423 is an equidigital number, since it uses as much as digits as its factorization.

305432401423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472075456.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 305432401423 its reverse (324104234503), we get a palindrome (629536635926).

The spelling of 305432401423 in words is "three hundred five billion, four hundred thirty-two million, four hundred one thousand, four hundred twenty-three".