1231103120008 has 8 divisors (see below), whose sum is σ = 2308318350030. Its totient is φ = 615551560000.

The previous prime is 1231103119993. The next prime is 1231103120017. The reversal of 1231103120008 is 8000213011321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1225090358244 + 6012761764 = 1106838^2 + 77542^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1231103120008² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76943944993 + ... + 76943945008.

Almost surely, 2^{1231103120008} is an apocalyptic number.

It is an amenable number.

1231103120008 is a deficient number, since it is larger than the sum of its proper divisors (1077215230022).

1231103120008 is a wasteful number, since it uses less digits than its factorization.

1231103120008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153887890007 (or 153887890003 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1231103120008 its reverse (8000213011321), we get a palindrome (9231316131329).

The spelling of 1231103120008 in words is "one trillion, two hundred thirty-one billion, one hundred three million, one hundred twenty thousand, eight".