123131012308 has 48 divisors (see below), whose sum is σ = 231586341840. Its totient is φ = 57074540544.

The previous prime is 123131012297. The next prime is 123131012341. The reversal of 123131012308 is 803210131321.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 20924201104 + 102206811204 = 144652^2 + 319698^2 .

It is a super-2 number, since 2×123131012308² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3821128 + ... + 3853216.

It is an arithmetic number, because the mean of its divisors is an integer number (4824715455).

Almost surely, 2^123131012308 is an apocalyptic number.

It is an amenable number.

123131012308 is a deficient number, since it is larger than the sum of its proper divisors (108455329532).

123131012308 is a wasteful number, since it uses less digits than its factorization.

123131012308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32956 (or 32954 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 123131012308 its reverse (803210131321), we get a palindrome (926341143629).

The spelling of 123131012308 in words is "one hundred twenty-three billion, one hundred thirty-one million, twelve thousand, three hundred eight".