103140231 has 16 divisors (see below), whose sum is σ = 142041600. Its totient is φ = 66532928.

The previous prime is 103140229. The next prime is 103140251. The reversal of 103140231 is 132041301.

It is a cyclic number.

It is not a de Polignac number, because 103140231 - 2¹ = 103140229 is a prime.

It is a super-2 number, since 2×103140231² = 21275814501466722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103140231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103140221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8440 + ... + 16658.

It is an arithmetic number, because the mean of its divisors is an integer number (8877600).

Almost surely, 2^103140231 is an apocalyptic number.

103140231 is a deficient number, since it is larger than the sum of its proper divisors (38901369).

103140231 is an equidigital number, since it uses as much as digits as its factorization.

103140231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8358.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 103140231 is about 10155.7979007068. The cubic root of 103140231 is about 468.9674495468.

Adding to 103140231 its reverse (132041301), we get a palindrome (235181532).

The spelling of 103140231 in words is "one hundred three million, one hundred forty thousand, two hundred thirty-one".