123200212131 has 24 divisors (see below), whose sum is σ = 182806525824. Its totient is φ = 79895704320.

The previous prime is 123200212127. The next prime is 123200212189. The reversal of 123200212131 is 131212002321.

123200212131 is a `hidden beast` number, since 1 + 2 + 320 + 0 + 212 + 131 = 666.

It is not a de Polignac number, because 123200212131 - 2² = 123200212127 is a prime.

It is a super-2 number, since 2×123200212131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123200212111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1532910 + ... + 1611276.

It is an arithmetic number, because the mean of its divisors is an integer number (7616938576).

Almost surely, 2^123200212131 is an apocalyptic number.

123200212131 is a deficient number, since it is larger than the sum of its proper divisors (59606313693).

123200212131 is a wasteful number, since it uses less digits than its factorization.

123200212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83131 (or 83128 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123200212131 its reverse (131212002321), we get a palindrome (254412214452).

The spelling of 123200212131 in words is "one hundred twenty-three billion, two hundred million, two hundred twelve thousand, one hundred thirty-one".