131601192723 has 360 divisors, whose sum is σ = 274617904176. Its totient is φ = 62198357760.

The previous prime is 131601192713. The next prime is 131601192731. The reversal of 131601192723 is 327291106131.

131601192723 is a `hidden beast` number, since 1 + 3 + 1 + 601 + 1 + 9 + 27 + 23 = 666.

It is not a de Polignac number, because 131601192723 - 2⁴ = 131601192707 is a prime.

It is a super-2 number, since 2×131601192723² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131601192713) by changing a digit.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 668026261 + ... + 668026457.

Almost surely, 2^131601192723 is an apocalyptic number.

131601192723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131601192723 is an abundant number, since it is smaller than the sum of its proper divisors (143016711453).

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

131601192723 is a wasteful number, since it uses less digits than its factorization.

131601192723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

Adding to 131601192723 its reverse (327291106131), we get a palindrome (458892298854).

The spelling of 131601192723 in words is "one hundred thirty-one billion, six hundred one million, one hundred ninety-two thousand, seven hundred twenty-three".