131223133000 has 64 divisors (see below), whose sum is σ = 310043560320. Its totient is φ = 51979608000.

The previous prime is 131223132983. The next prime is 131223133003. The reversal of 131223133000 is 331322131.

It is not an unprimeable number, because it can be changed into a prime (131223133003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534006 + ... + 740005.

It is an arithmetic number, because the mean of its divisors is an integer number (4844430630).

Almost surely, 2^131223133000 is an apocalyptic number.

131223133000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131223133000 is an abundant number, since it is smaller than the sum of its proper divisors (178820427320).

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

131223133000 is a wasteful number, since it uses less digits than its factorization.

131223133000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274135 (or 1274121 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 131223133000 its reverse (331322131), we get a palindrome (131554455131).

The spelling of 131223133000 in words is "one hundred thirty-one billion, two hundred twenty-three million, one hundred thirty-three thousand".