30312031123 has 8 divisors (see below), whose sum is σ = 33609764016. Its totient is φ = 27104647200.

The previous prime is 30312031117. The next prime is 30312031129. The reversal of 30312031123 is 32113021303.

It is an interprime number because it is at equal distance from previous prime (30312031117) and next prime (30312031129).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30312031123 - 2²¹ = 30309933971 is a prime.

It is a super-2 number, since 2×30312031123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30312031123.

It is not an unprimeable number, because it can be changed into a prime (30312031129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22586536 + ... + 22587877.

It is an arithmetic number, because the mean of its divisors is an integer number (4201220502).

Almost surely, 2^30312031123 is an apocalyptic number.

30312031123 is a deficient number, since it is larger than the sum of its proper divisors (3297732893).

30312031123 is a wasteful number, since it uses less digits than its factorization.

30312031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45174485.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30312031123 its reverse (32113021303), we get a palindrome (62425052426).

The spelling of 30312031123 in words is "thirty billion, three hundred twelve million, thirty-one thousand, one hundred twenty-three".