1231430123012 has 24 divisors (see below), whose sum is σ = 2156122031616. Its totient is φ = 615395356128.

The previous prime is 1231430122963. The next prime is 1231430123017. The reversal of 1231430123012 is 2103210341321.

It is a super-2 number, since 2×1231430123012² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231430123017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76654493 + ... + 76670555.

It is an arithmetic number, because the mean of its divisors is an integer number (89838417984).

Almost surely, 2^{1231430123012} is an apocalyptic number.

It is an amenable number.

1231430123012 is a deficient number, since it is larger than the sum of its proper divisors (924691908604).

1231430123012 is a wasteful number, since it uses less digits than its factorization.

1231430123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24827 (or 24825 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1231430123012 its reverse (2103210341321), we get a palindrome (3334640464333).

The spelling of 1231430123012 in words is "one trillion, two hundred thirty-one billion, four hundred thirty million, one hundred twenty-three thousand, twelve".