161614431 has 12 divisors (see below), whose sum is σ = 254665320. Its totient is φ = 97948080.

The previous prime is 161614367. The next prime is 161614433. The reversal of 161614431 is 134416161.

161614431 is a `hidden beast` number, since 1 + 6 + 1 + 614 + 43 + 1 = 666.

It is not a de Polignac number, because 161614431 - 2⁶ = 161614367 is a prime.

It is a super-2 number, since 2×161614431² = 52238448614907522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161614395 and 161614404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161614433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 816136 + ... + 816333.

It is an arithmetic number, because the mean of its divisors is an integer number (21222110).

Almost surely, 2^161614431 is an apocalyptic number.

161614431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161614431 is a deficient number, since it is larger than the sum of its proper divisors (93050889).

161614431 is a wasteful number, since it uses less digits than its factorization.

161614431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632486 (or 1632483 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 161614431 is about 12712.7664573845. The cubic root of 161614431 is about 544.7033494864.

The spelling of 161614431 in words is "one hundred sixty-one million, six hundred fourteen thousand, four hundred thirty-one".