131202229 has 4 divisors (see below), whose sum is σ = 131416876. Its totient is φ = 130987584.

The previous prime is 131202187. The next prime is 131202263. The reversal of 131202229 is 922202131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 922202131 = 13721 ⋅67211.

It can be written as a sum of positive squares in 2 ways, for example, as 49028004 + 82174225 = 7002^2 + 9065^2 .

It is a cyclic number.

It is not a de Polignac number, because 131202229 - 2²¹ = 129105077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131202289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106404 + ... + 107629.

It is an arithmetic number, because the mean of its divisors is an integer number (32854219).

Almost surely, 2^131202229 is an apocalyptic number.

It is an amenable number.

131202229 is a deficient number, since it is larger than the sum of its proper divisors (214647).

131202229 is an equidigital number, since it uses as much as digits as its factorization.

131202229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214646.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 131202229 is about 11454.3541502784. The cubic root of 131202229 is about 508.1365147093.

The spelling of 131202229 in words is "one hundred thirty-one million, two hundred two thousand, two hundred twenty-nine".