123131403246 has 32 divisors (see below), whose sum is σ = 252274331520. Its totient is φ = 40053331296.

The previous prime is 123131403191. The next prime is 123131403247. The reversal of 123131403246 is 642304131321.

It is a super-2 number, since 2×123131403246² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123131403247) 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, 1388281 + ... + 1474308.

It is an arithmetic number, because the mean of its divisors is an integer number (7883572860).

Almost surely, 2^123131403246 is an apocalyptic number.

123131403246 is an abundant number, since it is smaller than the sum of its proper divisors (129142928274).

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

123131403246 is a wasteful number, since it uses less digits than its factorization.

123131403246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862768.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 123131403246 its reverse (642304131321), we get a palindrome (765435534567).

The spelling of 123131403246 in words is "one hundred twenty-three billion, one hundred thirty-one million, four hundred three thousand, two hundred forty-six".