131013222 has 16 divisors (see below), whose sum is σ = 263003760. Its totient is φ = 43508192.

The previous prime is 131013149. The next prime is 131013229. The reversal of 131013222 is 222310131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131013229) 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, 38973 + ... + 42200.

It is an arithmetic number, because the mean of its divisors is an integer number (16437735).

Almost surely, 2^131013222 is an apocalyptic number.

131013222 is an abundant number, since it is smaller than the sum of its proper divisors (131990538).

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

131013222 is a wasteful number, since it uses less digits than its factorization.

131013222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81447.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131013222 is about 11446.1007334376. The cubic root of 131013222 is about 507.8923940764.

Adding to 131013222 its reverse (222310131), we get a palindrome (353323353).

The spelling of 131013222 in words is "one hundred thirty-one million, thirteen thousand, two hundred twenty-two".