103137231 has 4 divisors (see below), whose sum is σ = 137516312. Its totient is φ = 68758152.

The previous prime is 103137179. The next prime is 103137233. The reversal of 103137231 is 132731301.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 103137231 - 2¹⁰ = 103136207 is a prime.

It is a super-2 number, since 2×103137231² = 21274576836694722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103137198 and 103137207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103137233) 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, 17189536 + ... + 17189541.

It is an arithmetic number, because the mean of its divisors is an integer number (34379078).

Almost surely, 2^103137231 is an apocalyptic number.

103137231 is a deficient number, since it is larger than the sum of its proper divisors (34379081).

103137231 is an equidigital number, since it uses as much as digits as its factorization.

103137231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34379080.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 103137231 is about 10155.6502007503. The cubic root of 103137231 is about 468.9629026111.

Adding to 103137231 its reverse (132731301), we get a palindrome (235868532).

The spelling of 103137231 in words is "one hundred three million, one hundred thirty-seven thousand, two hundred thirty-one".