30451420234 has 4 divisors (see below), whose sum is σ = 45677130354. Its totient is φ = 15225710116.

The previous prime is 30451420231. The next prime is 30451420297. The reversal of 30451420234 is 43202415403.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 19195271209 + 11256149025 = 138547^2 + 106095^2 .

It is a super-2 number, since 2×30451420234² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30451420231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7612855057 + ... + 7612855060.

Almost surely, 2^30451420234 is an apocalyptic number.

30451420234 is a deficient number, since it is larger than the sum of its proper divisors (15225710120).

30451420234 is a wasteful number, since it uses less digits than its factorization.

30451420234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15225710119.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 30451420234 its reverse (43202415403), we get a palindrome (73653835637).

The spelling of 30451420234 in words is "thirty billion, four hundred fifty-one million, four hundred twenty thousand, two hundred thirty-four".