13421031 has 32 divisors (see below), whose sum is σ = 20224512. Its totient is φ = 7862400.

The previous prime is 13421021. The next prime is 13421039. The reversal of 13421031 is 13012431.

13421031 = 279² + 280² + ... + 395².

It is not a de Polignac number, because 13421031 - 2⁵ = 13420999 is a prime.

It is a super-2 number, since 2×13421031² = 360248146205922, 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 13421031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88806 + ... + 88956.

It is an arithmetic number, because the mean of its divisors is an integer number (632016).

Almost surely, 2^13421031 is an apocalyptic number.

13421031 is a deficient number, since it is larger than the sum of its proper divisors (6803481).

13421031 is a wasteful number, since it uses less digits than its factorization.

13421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

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

The square root of 13421031 is about 3663.4725329938. The cubic root of 13421031 is about 237.6449700334.

Adding to 13421031 its reverse (13012431), we get a palindrome (26433462).

The spelling of 13421031 in words is "thirteen million, four hundred twenty-one thousand, thirty-one".