103213129 has 4 divisors (see below), whose sum is σ = 103280400. Its totient is φ = 103145860.

The previous prime is 103213127. The next prime is 103213139. The reversal of 103213129 is 921312301.

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 a cyclic number.

It is not a de Polignac number, because 103213129 - 2¹ = 103213127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103213127) 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, 31279 + ... + 34420.

It is an arithmetic number, because the mean of its divisors is an integer number (25820100).

Almost surely, 2^103213129 is an apocalyptic number.

It is an amenable number.

103213129 is a deficient number, since it is larger than the sum of its proper divisors (67271).

103213129 is an equidigital number, since it uses as much as digits as its factorization.

103213129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67270.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 103213129 is about 10159.3862511473. The cubic root of 103213129 is about 469.0779099614.

It can be divided in two parts, 1032 and 13129, that added together give a square (14161 = 119²).

The spelling of 103213129 in words is "one hundred three million, two hundred thirteen thousand, one hundred twenty-nine".