102133231 has 4 divisors (see below), whose sum is σ = 102276000. Its totient is φ = 101990464.

The previous prime is 102133223. The next prime is 102133247. The reversal of 102133231 is 132331201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132331201 = 3037 ⋅43573.

It is a cyclic number.

It is not a de Polignac number, because 102133231 - 2³ = 102133223 is a prime.

It is a super-2 number, since 2×102133231² = 20862393748998722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102133211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70306 + ... + 71743.

It is an arithmetic number, because the mean of its divisors is an integer number (25569000).

Almost surely, 2^102133231 is an apocalyptic number.

102133231 is a deficient number, since it is larger than the sum of its proper divisors (142769).

102133231 is an equidigital number, since it uses as much as digits as its factorization.

102133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142768.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 102133231 is about 10106.0987032583. The cubic root of 102133231 is about 467.4362153820.

Adding to 102133231 its reverse (132331201), we get a palindrome (234464432).

The spelling of 102133231 in words is "one hundred two million, one hundred thirty-three thousand, two hundred thirty-one".