1231233122320 has 40 divisors (see below), whose sum is σ = 3013281066240. Its totient is φ = 466572551040.

The previous prime is 1231233122299. The next prime is 1231233122369. The reversal of 1231233122320 is 232213321321.

It is a tau number, because it is divible by the number of its divisors (40).

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, 405009376 + ... + 405012415.

It is an arithmetic number, because the mean of its divisors is an integer number (75332026656).

Almost surely, 2^{1231233122320} is an apocalyptic number.

1231233122320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231233122320 is an abundant number, since it is smaller than the sum of its proper divisors (1782047943920).

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

1231233122320 is a wasteful number, since it uses less digits than its factorization.

1231233122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810021823 (or 810021817 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1231233122320 its reverse (232213321321), we get a palindrome (1463446443641).

The spelling of 1231233122320 in words is "one trillion, two hundred thirty-one billion, two hundred thirty-three million, one hundred twenty-two thousand, three hundred twenty".