30420123231 has 16 divisors (see below), whose sum is σ = 41260752000. Its totient is φ = 19930007328.

The previous prime is 30420123203. The next prime is 30420123233. The reversal of 30420123231 is 13232102403.

It is not a de Polignac number, because 30420123231 - 2¹³ = 30420115039 is a prime.

It is a super-2 number, since 2×30420123231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30420123198 and 30420123207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420123233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566745 + ... + 618093.

It is an arithmetic number, because the mean of its divisors is an integer number (2578797000).

Almost surely, 2^30420123231 is an apocalyptic number.

30420123231 is a deficient number, since it is larger than the sum of its proper divisors (10840628769).

30420123231 is a wasteful number, since it uses less digits than its factorization.

30420123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54758.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30420123231 its reverse (13232102403), we get a palindrome (43652225634).

The spelling of 30420123231 in words is "thirty billion, four hundred twenty million, one hundred twenty-three thousand, two hundred thirty-one".