102131229 has 4 divisors (see below), whose sum is σ = 136174976. Its totient is φ = 68087484.

The previous prime is 102131219. The next prime is 102131231. The reversal of 102131229 is 922131201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102131229 - 2²⁴ = 85354013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17021869 + ... + 17021874.

It is an arithmetic number, because the mean of its divisors is an integer number (34043744).

Almost surely, 2^102131229 is an apocalyptic number.

It is an amenable number.

102131229 is a deficient number, since it is larger than the sum of its proper divisors (34043747).

102131229 is an equidigital number, since it uses as much as digits as its factorization.

102131229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34043746.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 102131229 is about 10105.9996536711. Note that the first 3 decimals coincide. The cubic root of 102131229 is about 467.4331611576.

The spelling of 102131229 in words is "one hundred two million, one hundred thirty-one thousand, two hundred twenty-nine".