131223233000 has 32 divisors (see below), whose sum is σ = 307062367560. Its totient is φ = 52489292800.

The previous prime is 131223232957. The next prime is 131223233033. The reversal of 131223233000 is 332322131.

It can be written as a sum of positive squares in 4 ways, for example, as 61844726596 + 69378506404 = 248686^2 + 263398^2 .

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

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, 65610617 + ... + 65612616.

Almost surely, 2^131223233000 is an apocalyptic number.

131223233000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131223233000 is an abundant number, since it is smaller than the sum of its proper divisors (175839134560).

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

131223233000 is a wasteful number, since it uses less digits than its factorization.

131223233000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131223254 (or 131223240 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 131223233000 its reverse (332322131), we get a palindrome (131555555131).

The spelling of 131223233000 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred thirty-three thousand".