30355431442 has 32 divisors (see below), whose sum is σ = 54350202240. Its totient is φ = 12443310720.

The previous prime is 30355431439. The next prime is 30355431443. The reversal of 30355431442 is 24413455303.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30355431398 and 30355431407.

It is not an unprimeable number, because it can be changed into a prime (30355431443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466059 + ... + 527182.

It is an arithmetic number, because the mean of its divisors is an integer number (1698443820).

Almost surely, 2^30355431442 is an apocalyptic number.

30355431442 is a deficient number, since it is larger than the sum of its proper divisors (23994770798).

30355431442 is a wasteful number, since it uses less digits than its factorization.

30355431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993346.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 30355431442 its reverse (24413455303), we get a palindrome (54768886745).

The spelling of 30355431442 in words is "thirty billion, three hundred fifty-five million, four hundred thirty-one thousand, four hundred forty-two".