312030001123 has 4 divisors (see below), whose sum is σ = 312031723608. Its totient is φ = 312028278640.

The previous prime is 312030001109. The next prime is 312030001183. The reversal of 312030001123 is 321100030213.

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 312030001123 - 2⁵ = 312030001091 is a prime.

It is a super-2 number, since 2×312030001123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312030001097 and 312030001106.

It is not an unprimeable number, because it can be changed into a prime (312030001183) 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, 552661 + ... + 964102.

It is an arithmetic number, because the mean of its divisors is an integer number (78007930902).

Almost surely, 2^312030001123 is an apocalyptic number.

312030001123 is a deficient number, since it is larger than the sum of its proper divisors (1722485).

312030001123 is a wasteful number, since it uses less digits than its factorization.

312030001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722484.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 312030001123 its reverse (321100030213), we get a palindrome (633130031336).

The spelling of 312030001123 in words is "three hundred twelve billion, thirty million, one thousand, one hundred twenty-three".