30312012012031 has 4 divisors (see below), whose sum is σ = 30312046567552. Its totient is φ = 30311977456512.

The previous prime is 30312012012013. The next prime is 30312012012059. The reversal of 30312012012031 is 13021021021303.

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 30312012012031 - 2¹⁷ = 30312011880959 is a prime.

It is a super-2 number, since 2×30312012012031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312012019031) 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, 15926751 + ... + 17728096.

It is an arithmetic number, because the mean of its divisors is an integer number (7578011641888).

Almost surely, 2^{30312012012031} is an apocalyptic number.

30312012012031 is a deficient number, since it is larger than the sum of its proper divisors (34555521).

30312012012031 is an equidigital number, since it uses as much as digits as its factorization.

30312012012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34555520.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30312012012031 its reverse (13021021021303), we get a palindrome (43333033033334).

The spelling of 30312012012031 in words is "thirty trillion, three hundred twelve billion, twelve million, twelve thousand, thirty-one".