131223311032 has 128 divisors (see below), whose sum is σ = 286234015680. Its totient is φ = 55738368000.

The previous prime is 131223311029. The next prime is 131223311041. The reversal of 131223311032 is 230113322131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 131223310994 and 131223311012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227423128 + ... + 227423704.

Almost surely, 2^131223311032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131223311032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143117007840).

131223311032 is an abundant number, since it is smaller than the sum of its proper divisors (155010704648).

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

131223311032 is a wasteful number, since it uses less digits than its factorization.

131223311032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131223311032 its reverse (230113322131), we get a palindrome (361336633163).

The spelling of 131223311032 in words is "one hundred thirty-one billion, two hundred twenty-three million, three hundred eleven thousand, thirty-two".