31441421 has 8 divisors (see below), whose sum is σ = 34345344. Its totient is φ = 28545120.

The previous prime is 31441411. The next prime is 31441433. The reversal of 31441421 is 12414413.

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

It is a cyclic number.

It is not a de Polignac number, because 31441421 - 2¹⁸ = 31179277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31441393 and 31441402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31441411) 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, 9980 + ... + 12746.

It is an arithmetic number, because the mean of its divisors is an integer number (4293168).

Almost surely, 2^31441421 is an apocalyptic number.

It is an amenable number.

31441421 is a deficient number, since it is larger than the sum of its proper divisors (2903923).

31441421 is a wasteful number, since it uses less digits than its factorization.

31441421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811.

The product of its digits is 384, while the sum is 20.

The square root of 31441421 is about 5607.2650195973. The cubic root of 31441421 is about 315.6220880168.

Adding to 31441421 its reverse (12414413), we get a palindrome (43855834).

The spelling of 31441421 in words is "thirty-one million, four hundred forty-one thousand, four hundred twenty-one".