131011235212 has 24 divisors (see below), whose sum is σ = 269351771472. Its totient is φ = 54969748800.

The previous prime is 131011235161. The next prime is 131011235213. The reversal of 131011235212 is 212532110131.

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

It is not an unprimeable number, because it can be changed into a prime (131011235213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114519739 + ... + 114520882.

It is an arithmetic number, because the mean of its divisors is an integer number (11222990478).

Almost surely, 2^131011235212 is an apocalyptic number.

It is an amenable number.

131011235212 is an abundant number, since it is smaller than the sum of its proper divisors (138340536260).

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

131011235212 is a wasteful number, since it uses less digits than its factorization.

131011235212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229040649 (or 229040647 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 131011235212 its reverse (212532110131), we get a palindrome (343543345343).

The spelling of 131011235212 in words is "one hundred thirty-one billion, eleven million, two hundred thirty-five thousand, two hundred twelve".