1231501434512 has 10 divisors (see below), whose sum is σ = 2386034029398. Its totient is φ = 615750717248.

The previous prime is 1231501434509. The next prime is 1231501434557. The reversal of 1231501434512 is 2154341051321.

It can be written as a sum of positive squares in only one way, i.e., 1197676339456 + 33825095056 = 1094384^2 + 183916^2 .

It is a super-2 number, since 2×1231501434512² (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, 38484419813 + ... + 38484419844.

Almost surely, 2^{1231501434512} is an apocalyptic number.

It is an amenable number.

1231501434512 is a deficient number, since it is larger than the sum of its proper divisors (1154532594886).

1231501434512 is an equidigital number, since it uses as much as digits as its factorization.

1231501434512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76968839665 (or 76968839659 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 1231501434512 its reverse (2154341051321), we get a palindrome (3385842485833).

The spelling of 1231501434512 in words is "one trillion, two hundred thirty-one billion, five hundred one million, four hundred thirty-four thousand, five hundred twelve".