123131202130 has 32 divisors (see below), whose sum is σ = 235090594944. Its totient is φ = 46272903936.

The previous prime is 123131202071. The next prime is 123131202133. The reversal of 123131202130 is 31202131321.

It is a super-2 number, since 2×123131202130² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123131202098 and 123131202107.

It is not an unprimeable number, because it can be changed into a prime (123131202133) 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, 547542 + ... + 738961.

It is an arithmetic number, because the mean of its divisors is an integer number (7346581092).

Almost surely, 2^123131202130 is an apocalyptic number.

123131202130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123131202130 is a deficient number, since it is larger than the sum of its proper divisors (111959392814).

123131202130 is a wasteful number, since it uses less digits than its factorization.

123131202130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287090.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123131202130 its reverse (31202131321), we get a palindrome (154333333451).

The spelling of 123131202130 in words is "one hundred twenty-three billion, one hundred thirty-one million, two hundred two thousand, one hundred thirty".