10121309 has 8 divisors (see below), whose sum is σ = 11276928. Its totient is φ = 9004960.

The previous prime is 10121299. The next prime is 10121317. The reversal of 10121309 is 90312101.

It is a happy number.

10121309 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121309 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 (10121329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9272 + ... + 10305.

It is an arithmetic number, because the mean of its divisors is an integer number (1409616).

Almost surely, 2^10121309 is an apocalyptic number.

It is an amenable number.

10121309 is a deficient number, since it is larger than the sum of its proper divisors (1155619).

10121309 is a wasteful number, since it uses less digits than its factorization.

10121309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19635.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 10121309 is about 3181.4004777770. The cubic root of 10121309 is about 216.3111442367.

The spelling of 10121309 in words is "ten million, one hundred twenty-one thousand, three hundred nine".