131723366 has 4 divisors (see below), whose sum is σ = 197585052. Its totient is φ = 65861682.

The previous prime is 131723357. The next prime is 131723393. The reversal of 131723366 is 663327131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 663327131 = 17 ⋅39019243.

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, 32930840 + ... + 32930843.

It is an arithmetic number, because the mean of its divisors is an integer number (49396263).

Almost surely, 2^131723366 is an apocalyptic number.

131723366 is a deficient number, since it is larger than the sum of its proper divisors (65861686).

131723366 is an equidigital number, since it uses as much as digits as its factorization.

131723366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65861685.

The product of its digits is 13608, while the sum is 32.

The square root of 131723366 is about 11477.0800293454. The cubic root of 131723366 is about 508.8084009126.

The spelling of 131723366 in words is "one hundred thirty-one million, seven hundred twenty-three thousand, three hundred sixty-six".