123461231506 has 4 divisors (see below), whose sum is σ = 185191847262. Its totient is φ = 61730615752.

The previous prime is 123461231503. The next prime is 123461231549. The reversal of 123461231506 is 605132164321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123106248225 + 354983281 = 350865^2 + 18841^2 .

It is not an unprimeable number, because it can be changed into a prime (123461231503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30865307875 + ... + 30865307878.

Almost surely, 2^123461231506 is an apocalyptic number.

123461231506 is a deficient number, since it is larger than the sum of its proper divisors (61730615756).

123461231506 is an equidigital number, since it uses as much as digits as its factorization.

123461231506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61730615755.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 123461231506 its reverse (605132164321), we get a palindrome (728593395827).

The spelling of 123461231506 in words is "one hundred twenty-three billion, four hundred sixty-one million, two hundred thirty-one thousand, five hundred six".