102231249 has 4 divisors (see below), whose sum is σ = 136308336. Its totient is φ = 68154164.

The previous prime is 102231193. The next prime is 102231277. The reversal of 102231249 is 942132201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 942132201 = 3 ⋅314044067.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102231249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102231289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17038539 + ... + 17038544.

It is an arithmetic number, because the mean of its divisors is an integer number (34077084).

Almost surely, 2^102231249 is an apocalyptic number.

It is an amenable number.

102231249 is a deficient number, since it is larger than the sum of its proper divisors (34077087).

102231249 is an equidigital number, since it uses as much as digits as its factorization.

102231249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34077086.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 102231249 is about 10110.9469882895. The cubic root of 102231249 is about 467.5857015427.

The spelling of 102231249 in words is "one hundred two million, two hundred thirty-one thousand, two hundred forty-nine".