103137509 has 8 divisors (see below), whose sum is σ = 105862680. Its totient is φ = 100422400.

The previous prime is 103137499. The next prime is 103137533. The reversal of 103137509 is 905731301.

It can be written as a sum of positive squares in 4 ways, for example, as 1188100 + 101949409 = 1090^2 + 10097^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 103137509 - 2⁴ = 103137493 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 (103137409) 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, 21119 + ... + 25539.

It is an arithmetic number, because the mean of its divisors is an integer number (13232835).

Almost surely, 2^103137509 is an apocalyptic number.

It is an amenable number.

103137509 is a deficient number, since it is larger than the sum of its proper divisors (2725171).

103137509 is an equidigital number, since it uses as much as digits as its factorization.

103137509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 103137509 is about 10155.6638877033. The cubic root of 103137509 is about 468.9633239642.

The spelling of 103137509 in words is "one hundred three million, one hundred thirty-seven thousand, five hundred nine".