131356222 has 4 divisors (see below), whose sum is σ = 197034336. Its totient is φ = 65678110.

The previous prime is 131356217. The next prime is 131356249. The reversal of 131356222 is 222653131.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×131356222² = 34508914116226568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32839054 + ... + 32839057.

It is an arithmetic number, because the mean of its divisors is an integer number (49258584).

Almost surely, 2^131356222 is an apocalyptic number.

131356222 is a deficient number, since it is larger than the sum of its proper divisors (65678114).

131356222 is an equidigital number, since it uses as much as digits as its factorization.

131356222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65678113.

The product of its digits is 2160, while the sum is 25.

The square root of 131356222 is about 11461.0742079440. The cubic root of 131356222 is about 508.3352381427.

The spelling of 131356222 in words is "one hundred thirty-one million, three hundred fifty-six thousand, two hundred twenty-two".