30440131423 has 4 divisors (see below), whose sum is σ = 32781680008. Its totient is φ = 28098582840.

The previous prime is 30440131411. The next prime is 30440131493. The reversal of 30440131423 is 32413104403.

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 30440131423 - 2²¹ = 30438034271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440131493) 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, 1170774273 + ... + 1170774298.

It is an arithmetic number, because the mean of its divisors is an integer number (8195420002).

Almost surely, 2^30440131423 is an apocalyptic number.

30440131423 is a deficient number, since it is larger than the sum of its proper divisors (2341548585).

30440131423 is a wasteful number, since it uses less digits than its factorization.

30440131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341548584.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 30440131423 its reverse (32413104403), we get a palindrome (62853235826).

The spelling of 30440131423 in words is "thirty billion, four hundred forty million, one hundred thirty-one thousand, four hundred twenty-three".