131723541 has 12 divisors (see below), whose sum is σ = 193108032. Its totient is φ = 86504616.

The previous prime is 131723533. The next prime is 131723549. The reversal of 131723541 is 145327131.

It is an interprime number because it is at equal distance from previous prime (131723533) and next prime (131723549).

It is not a de Polignac number, because 131723541 - 2³ = 131723533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131723549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108621 + ... + 109826.

It is an arithmetic number, because the mean of its divisors is an integer number (16092336).

Almost surely, 2^131723541 is an apocalyptic number.

It is an amenable number.

131723541 is a deficient number, since it is larger than the sum of its proper divisors (61384491).

131723541 is a wasteful number, since it uses less digits than its factorization.

131723541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218520 (or 218517 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 131723541 is about 11477.0876532333. The cubic root of 131723541 is about 508.8086262370.

The spelling of 131723541 in words is "one hundred thirty-one million, seven hundred twenty-three thousand, five hundred forty-one".