172701131 has 2 divisors, whose sum is σ = 172701132. Its totient is φ = 172701130.

The previous prime is 172701107. The next prime is 172701149. The reversal of 172701131 is 131107271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172701131 - 2¹⁰ = 172700107 is a prime.

It is a super-2 number, since 2×172701131² = 59651361297358322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 172701097 and 172701106.

It is not a weakly prime, because it can be changed into another prime (172701101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86350565 + 86350566.

It is an arithmetic number, because the mean of its divisors is an integer number (86350566).

Almost surely, 2^172701131 is an apocalyptic number.

172701131 is a deficient number, since it is larger than the sum of its proper divisors (1).

172701131 is an equidigital number, since it uses as much as digits as its factorization.

172701131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294, while the sum is 23.

The square root of 172701131 is about 13141.5802322247. The cubic root of 172701131 is about 556.8844107749.

The spelling of 172701131 in words is "one hundred seventy-two million, seven hundred one thousand, one hundred thirty-one".