123131540210 has 32 divisors (see below), whose sum is σ = 253313004672. Its totient is φ = 42214222080.

The previous prime is 123131540197. The next prime is 123131540227. The reversal of 123131540210 is 12045131321.

It is a super-2 number, since 2×123131540210² (a number of 23 digits) contains 22 as substring.

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, 1687034 + ... + 1758506.

It is an arithmetic number, because the mean of its divisors is an integer number (7916031396).

Almost surely, 2^123131540210 is an apocalyptic number.

123131540210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123131540210 is an abundant number, since it is smaller than the sum of its proper divisors (130181464462).

123131540210 is a wasteful number, since it uses less digits than its factorization.

123131540210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96098.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 123131540210 its reverse (12045131321), we get a palindrome (135176671531).

The spelling of 123131540210 in words is "one hundred twenty-three billion, one hundred thirty-one million, five hundred forty thousand, two hundred ten".