131223203210 has 32 divisors (see below), whose sum is σ = 259009797312. Its totient is φ = 47470279680.

The previous prime is 131223203197. The next prime is 131223203219. The reversal of 131223203210 is 12302322131.

It is a super-3 number, since 3×131223203210³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131223203219) 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, 3069284 + ... + 3111743.

It is an arithmetic number, because the mean of its divisors is an integer number (8094056166).

Almost surely, 2^131223203210 is an apocalyptic number.

131223203210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131223203210 is a deficient number, since it is larger than the sum of its proper divisors (127786594102).

131223203210 is a wasteful number, since it uses less digits than its factorization.

131223203210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181238.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131223203210 its reverse (12302322131), we get a palindrome (143525525341).

It can be divided in two parts, 131223 and 203210, that added together give a palindrome (334433).

The spelling of 131223203210 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred three thousand, two hundred ten".