123131103210 has 32 divisors (see below), whose sum is σ = 328349609280. Its totient is φ = 32834960784.

The previous prime is 123131103197. The next prime is 123131103217. The reversal of 123131103210 is 12301131321.

123131103210 is a `hidden beast` number, since 1 + 2 + 31 + 311 + 0 + 321 + 0 = 666.

It is a super-2 number, since 2×123131103210² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (123131103217) 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, 228020292 + ... + 228020831.

It is an arithmetic number, because the mean of its divisors is an integer number (10260925290).

Almost surely, 2^123131103210 is an apocalyptic number.

123131103210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123131103210 is an abundant number, since it is smaller than the sum of its proper divisors (205218506070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123131103210 is a wasteful number, since it uses less digits than its factorization.

123131103210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456041139 (or 456041133 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123131103210 its reverse (12301131321), we get a palindrome (135432234531).

The spelling of 123131103210 in words is "one hundred twenty-three billion, one hundred thirty-one million, one hundred three thousand, two hundred ten".