30132420431 has 4 divisors (see below), whose sum is σ = 30369683712. Its totient is φ = 29895157152.

The previous prime is 30132420421. The next prime is 30132420433. The reversal of 30132420431 is 13402423103.

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-30132420431 is a prime.

It is a super-2 number, since 2×30132420431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30132420397 and 30132420406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30132420433) 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, 118631450 + ... + 118631703.

It is an arithmetic number, because the mean of its divisors is an integer number (7592420928).

Almost surely, 2^30132420431 is an apocalyptic number.

30132420431 is a deficient number, since it is larger than the sum of its proper divisors (237263281).

30132420431 is a wasteful number, since it uses less digits than its factorization.

30132420431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237263280.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30132420431 its reverse (13402423103), we get a palindrome (43534843534).

The spelling of 30132420431 in words is "thirty billion, one hundred thirty-two million, four hundred twenty thousand, four hundred thirty-one".