131722497 has 32 divisors (see below), whose sum is σ = 206236800. Its totient is φ = 82861056.

The previous prime is 131722489. The next prime is 131722517. The reversal of 131722497 is 794227131.

It is not a de Polignac number, because 131722497 - 2³ = 131722489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131722417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221833 + ... + 222425.

It is an arithmetic number, because the mean of its divisors is an integer number (6444900).

Almost surely, 2^131722497 is an apocalyptic number.

It is an amenable number.

131722497 is a deficient number, since it is larger than the sum of its proper divisors (74514303).

131722497 is a wasteful number, since it uses less digits than its factorization.

131722497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1048 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 131722497 is about 11477.0421712216. The cubic root of 131722497 is about 508.8072820135.

The spelling of 131722497 in words is "one hundred thirty-one million, seven hundred twenty-two thousand, four hundred ninety-seven".