30311230312123 has 4 divisors (see below), whose sum is σ = 30763636734760. Its totient is φ = 29858823889488.

The previous prime is 30311230312093. The next prime is 30311230312157. The reversal of 30311230312123 is 32121303211303.

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 30311230312123 - 2³⁷ = 30173791358651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30311230318123) 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, 226203211218 + ... + 226203211351.

It is an arithmetic number, because the mean of its divisors is an integer number (7690909183690).

Almost surely, 2^{30311230312123} is an apocalyptic number.

30311230312123 is a deficient number, since it is larger than the sum of its proper divisors (452406422637).

30311230312123 is an equidigital number, since it uses as much as digits as its factorization.

30311230312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452406422636.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 30311230312123 its reverse (32121303211303), we get a palindrome (62432533523426).

The spelling of 30311230312123 in words is "thirty trillion, three hundred eleven billion, two hundred thirty million, three hundred twelve thousand, one hundred twenty-three".