131751257 has 16 divisors (see below), whose sum is σ = 145639680. Its totient is φ = 118195200.

The previous prime is 131751247. The next prime is 131751281. The reversal of 131751257 is 752157131.

It is a cyclic number.

It is not a de Polignac number, because 131751257 - 2¹⁴ = 131734873 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (131751247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486032 + ... + 486302.

It is an arithmetic number, because the mean of its divisors is an integer number (9102480).

Almost surely, 2^131751257 is an apocalyptic number.

It is an amenable number.

131751257 is a deficient number, since it is larger than the sum of its proper divisors (13888423).

131751257 is a wasteful number, since it uses less digits than its factorization.

131751257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704.

The product of its digits is 7350, while the sum is 32.

The square root of 131751257 is about 11478.2950388984. The cubic root of 131751257 is about 508.8443099394.

The spelling of 131751257 in words is "one hundred thirty-one million, seven hundred fifty-one thousand, two hundred fifty-seven".