1311233123000 has 64 divisors (see below), whose sum is σ = 3069222736320. Its totient is φ = 524333040000.

The previous prime is 1311233122981. The next prime is 1311233123021. The reversal of 1311233123000 is 3213321131.

It is a super-3 number, since 3×1311233123000³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3102389 + ... + 3499611.

It is an arithmetic number, because the mean of its divisors is an integer number (47956605255).

Almost surely, 2^{1311233123000} is an apocalyptic number.

1311233123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311233123000 is an abundant number, since it is smaller than the sum of its proper divisors (1757989613320).

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

1311233123000 is a wasteful number, since it uses less digits than its factorization.

1311233123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400545 (or 400531 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1311233123000 its reverse (3213321131), we get a palindrome (1314446444131).

The spelling of 1311233123000 in words is "one trillion, three hundred eleven billion, two hundred thirty-three million, one hundred twenty-three thousand".