161031924 has 36 divisors (see below), whose sum is σ = 424753056. Its totient is φ = 51343248.

The previous prime is 161031911. The next prime is 161031953. The reversal of 161031924 is 429130161.

161031924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96414 + ... + 98069.

It is an arithmetic number, because the mean of its divisors is an integer number (11798696).

Almost surely, 2^161031924 is an apocalyptic number.

It is an amenable number.

161031924 is an abundant number, since it is smaller than the sum of its proper divisors (263721132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161031924 is a wasteful number, since it uses less digits than its factorization.

161031924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194516 (or 194511 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 161031924 is about 12689.8354599262. The cubic root of 161031924 is about 544.0481367799.

The spelling of 161031924 in words is "one hundred sixty-one million, thirty-one thousand, nine hundred twenty-four".