103421031 has 16 divisors (see below), whose sum is σ = 161854464. Its totient is φ = 57500064.

The previous prime is 103421027. The next prime is 103421039. The reversal of 103421031 is 130124301.

It is not a de Polignac number, because 103421031 - 2² = 103421027 is a prime.

It is a super-2 number, since 2×103421031² = 21391819306205922, 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 103421031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103421039) 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, 65775 + ... + 67328.

It is an arithmetic number, because the mean of its divisors is an integer number (10115904).

Almost surely, 2^103421031 is an apocalyptic number.

103421031 is a deficient number, since it is larger than the sum of its proper divisors (58433433).

103421031 is a wasteful number, since it uses less digits than its factorization.

103421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133150.

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

The square root of 103421031 is about 10169.6131194849. The cubic root of 103421031 is about 469.3926529602.

Adding to 103421031 its reverse (130124301), we get a palindrome (233545332).

The spelling of 103421031 in words is "one hundred three million, four hundred twenty-one thousand, thirty-one".