163900131 has 16 divisors (see below), whose sum is σ = 225942528. Its totient is φ = 105573600.

The previous prime is 163900127. The next prime is 163900153. The reversal of 163900131 is 131009361.

It is not a de Polignac number, because 163900131 - 2² = 163900127 is a prime.

It is a super-2 number, since 2×163900131² = 53726505883634322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163900031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87141 + ... + 89001.

It is an arithmetic number, because the mean of its divisors is an integer number (14121408).

Almost surely, 2^163900131 is an apocalyptic number.

163900131 is a deficient number, since it is larger than the sum of its proper divisors (62042397).

163900131 is a wasteful number, since it uses less digits than its factorization.

163900131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 163900131 is about 12802.3486517123. The cubic root of 163900131 is about 547.2592365220.

Adding to 163900131 its reverse (131009361), we get a palindrome (294909492).

The spelling of 163900131 in words is "one hundred sixty-three million, nine hundred thousand, one hundred thirty-one".