161270131 has 12 divisors (see below), whose sum is σ = 183380400. Its totient is φ = 141550640.

The previous prime is 161270129. The next prime is 161270141. The reversal of 161270131 is 131072161.

It is not a de Polignac number, because 161270131 - 2¹ = 161270129 is a prime.

It is a super-2 number, since 2×161270131² = 52016110305514322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161270111) 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, 19471 + ... + 26488.

It is an arithmetic number, because the mean of its divisors is an integer number (15281700).

Almost surely, 2^161270131 is an apocalyptic number.

161270131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161270131 is a deficient number, since it is larger than the sum of its proper divisors (22110269).

161270131 is a wasteful number, since it uses less digits than its factorization.

161270131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46010 (or 45999 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 161270131 is about 12699.2177318132. The cubic root of 161270131 is about 544.3162662745.

The spelling of 161270131 in words is "one hundred sixty-one million, two hundred seventy thousand, one hundred thirty-one".