103431021 has 8 divisors (see below), whose sum is σ = 141635424. Its totient is φ = 67090320.

The previous prime is 103431019. The next prime is 103431059. The reversal of 103431021 is 120134301.

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

It is not a de Polignac number, because 103431021 - 2¹ = 103431019 is a prime.

It is a super-2 number, since 2×103431021² = 21395952210204882, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103431061) 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, 465795 + ... + 466016.

It is an arithmetic number, because the mean of its divisors is an integer number (17704428).

Almost surely, 2^103431021 is an apocalyptic number.

It is an amenable number.

103431021 is a deficient number, since it is larger than the sum of its proper divisors (38204403).

103431021 is an equidigital number, since it uses as much as digits as its factorization.

103431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931851.

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

The square root of 103431021 is about 10170.1042767515. The cubic root of 103431021 is about 469.4077662036.

Adding to 103431021 its reverse (120134301), we get a palindrome (223565322).

The spelling of 103431021 in words is "one hundred three million, four hundred thirty-one thousand, twenty-one".