123031032312 has 32 divisors (see below), whose sum is σ = 307596793680. Its totient is φ = 41007782400.

The previous prime is 123031032307. The next prime is 123031032323. The reversal of 123031032312 is 213230130321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253968 + ... + 557280.

Almost surely, 2^123031032312 is an apocalyptic number.

123031032312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123031032312 is an abundant number, since it is smaller than the sum of its proper divisors (184565761368).

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

123031032312 is a wasteful number, since it uses less digits than its factorization.

123031032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320223 (or 320219 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123031032312 its reverse (213230130321), we get a palindrome (336261162633).

The spelling of 123031032312 in words is "one hundred twenty-three billion, thirty-one million, thirty-two thousand, three hundred twelve".