131321312210 has 64 divisors (see below), whose sum is σ = 269295943680. Its totient is φ = 45640140480.

The previous prime is 131321312201. The next prime is 131321312257. The reversal of 131321312210 is 12213123131.

It is a happy 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, 3215579 + ... + 3256161.

It is an arithmetic number, because the mean of its divisors is an integer number (4207749120).

Almost surely, 2^131321312210 is an apocalyptic number.

131321312210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131321312210 is an abundant number, since it is smaller than the sum of its proper divisors (137974631470).

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

131321312210 is a wasteful number, since it uses less digits than its factorization.

131321312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41903.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131321312210 its reverse (12213123131), we get a palindrome (143534435341).

The spelling of 131321312210 in words is "one hundred thirty-one billion, three hundred twenty-one million, three hundred twelve thousand, two hundred ten".