161357230 has 16 divisors (see below), whose sum is σ = 292565520. Its totient is φ = 64071232.

The previous prime is 161357197. The next prime is 161357243. The reversal of 161357230 is 32753161.

It is a congruent 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, 57520 + ... + 60259.

It is an arithmetic number, because the mean of its divisors is an integer number (18285345).

Almost surely, 2^161357230 is an apocalyptic number.

161357230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161357230 is a deficient number, since it is larger than the sum of its proper divisors (131208290).

161357230 is a wasteful number, since it uses less digits than its factorization.

161357230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117923.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 161357230 is about 12702.6465746316. The cubic root of 161357230 is about 544.4142403378.

The spelling of 161357230 in words is "one hundred sixty-one million, three hundred fifty-seven thousand, two hundred thirty".