123303131012 has 6 divisors (see below), whose sum is σ = 215780479278. Its totient is φ = 61651565504.

The previous prime is 123303130991. The next prime is 123303131023. The reversal of 123303131012 is 210131303321.

It can be written as a sum of positive squares in only one way, i.e., 68300686336 + 55002444676 = 261344^2 + 234526^2 .

It is a super-2 number, since 2×123303131012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15412891373 + ... + 15412891380.

It is an arithmetic number, because the mean of its divisors is an integer number (35963413213).

Almost surely, 2^123303131012 is an apocalyptic number.

It is an amenable number.

123303131012 is a deficient number, since it is larger than the sum of its proper divisors (92477348266).

123303131012 is a wasteful number, since it uses less digits than its factorization.

123303131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30825782757 (or 30825782755 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123303131012 its reverse (210131303321), we get a palindrome (333434434333).

The spelling of 123303131012 in words is "one hundred twenty-three billion, three hundred three million, one hundred thirty-one thousand, twelve".