161431652 has 24 divisors (see below), whose sum is σ = 289559424. Its totient is φ = 78712992.

The previous prime is 161431631. The next prime is 161431667. The reversal of 161431652 is 256134161.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56318 + ... + 59114.

It is an arithmetic number, because the mean of its divisors is an integer number (12064976).

Almost surely, 2^161431652 is an apocalyptic number.

It is an amenable number.

161431652 is a deficient number, since it is larger than the sum of its proper divisors (128127772).

161431652 is a wasteful number, since it uses less digits than its factorization.

161431652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3153 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 161431652 is about 12705.5756264720. The cubic root of 161431652 is about 544.4979266387.

The spelling of 161431652 in words is "one hundred sixty-one million, four hundred thirty-one thousand, six hundred fifty-two".