172277043031 has 4 divisors (see below), whose sum is σ = 172660734000. Its totient is φ = 171893352064.

The previous prime is 172277043017. The next prime is 172277043077. The reversal of 172277043031 is 130340772271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172277043031 - 2²⁹ = 171740172119 is a prime.

It is a super-2 number, since 2×172277043031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172277049031) 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 3 ways as a sum of consecutive naturals, for example, 191844811 + ... + 191845708.

It is an arithmetic number, because the mean of its divisors is an integer number (43165183500).

Almost surely, 2^172277043031 is an apocalyptic number.

172277043031 is a deficient number, since it is larger than the sum of its proper divisors (383690969).

172277043031 is an equidigital number, since it uses as much as digits as its factorization.

172277043031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383690968.

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 172277043031 in words is "one hundred seventy-two billion, two hundred seventy-seven million, forty-three thousand, thirty-one".