30012312120231 has 72 divisors (see below), whose sum is σ = 49288694716800. Its totient is φ = 16194335228064.

The previous prime is 30012312120211. The next prime is 30012312120233. The reversal of 30012312120231 is 13202121321003.

It is not a de Polignac number, because 30012312120231 - 2⁵ = 30012312120199 is a prime.

It is a super-2 number, since 2×30012312120231² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 30012312120198 and 30012312120207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012312120233) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15370470 + ... + 17212668.

It is an arithmetic number, because the mean of its divisors is an integer number (684565204400).

Almost surely, 2^{30012312120231} is an apocalyptic number.

30012312120231 is a deficient number, since it is larger than the sum of its proper divisors (19276382596569).

30012312120231 is a wasteful number, since it uses less digits than its factorization.

30012312120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842561 (or 1842535 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30012312120231 its reverse (13202121321003), we get a palindrome (43214433441234).

The spelling of 30012312120231 in words is "thirty trillion, twelve billion, three hundred twelve million, one hundred twenty thousand, two hundred thirty-one".