161417331 has 24 divisors (see below), whose sum is σ = 246451920. Its totient is φ = 101523456.

The previous prime is 161417327. The next prime is 161417353. The reversal of 161417331 is 133714161.

161417331 is a `hidden beast` number, since 1 + 614 + 17 + 3 + 31 = 666.

161417331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161417331 - 2² = 161417327 is a prime.

It is a super-2 number, since 2×161417331² = 52111109494327122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161417295 and 161417304.

It is not an unprimeable number, because it can be changed into a prime (161417371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42111 + ... + 45783.

It is an arithmetic number, because the mean of its divisors is an integer number (10268830).

Almost surely, 2^161417331 is an apocalyptic number.

161417331 is a deficient number, since it is larger than the sum of its proper divisors (85034589).

161417331 is a wasteful number, since it uses less digits than its factorization.

161417331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955 (or 3952 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 161417331 is about 12705.0120424972. The cubic root of 161417331 is about 544.4818249112.

The spelling of 161417331 in words is "one hundred sixty-one million, four hundred seventeen thousand, three hundred thirty-one".