131451266 has 4 divisors (see below), whose sum is σ = 197176902. Its totient is φ = 65725632.

The previous prime is 131451263. The next prime is 131451277. The reversal of 131451266 is 662154131.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 131446225 + 5041 = 11465^2 + 71^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131451263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32862815 + ... + 32862818.

Almost surely, 2^131451266 is an apocalyptic number.

131451266 is a deficient number, since it is larger than the sum of its proper divisors (65725636).

131451266 is an equidigital number, since it uses as much as digits as its factorization.

131451266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65725635.

The product of its digits is 4320, while the sum is 29.

The square root of 131451266 is about 11465.2198408927. The cubic root of 131451266 is about 508.4578121266.

The spelling of 131451266 in words is "one hundred thirty-one million, four hundred fifty-one thousand, two hundred sixty-six".