30312442156 has 12 divisors (see below), whose sum is σ = 53056561320. Its totient is φ = 15153424640.

The previous prime is 30312442117. The next prime is 30312442157. The reversal of 30312442156 is 65124421303.

It is not an unprimeable number, because it can be changed into a prime (30312442157) 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, 674626 + ... + 718153.

It is an arithmetic number, because the mean of its divisors is an integer number (4421380110).

Almost surely, 2^30312442156 is an apocalyptic number.

It is an amenable number.

30312442156 is a deficient number, since it is larger than the sum of its proper divisors (22744119164).

30312442156 is a wasteful number, since it uses less digits than its factorization.

30312442156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398224 (or 1398222 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 30312442156 its reverse (65124421303), we get a palindrome (95436863459).

The spelling of 30312442156 in words is "thirty billion, three hundred twelve million, four hundred forty-two thousand, one hundred fifty-six".