31421541 has 8 divisors (see below), whose sum is σ = 41955040. Its totient is φ = 20917872.

The previous prime is 31421479. The next prime is 31421557. The reversal of 31421541 is 14512413.

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

It is not a de Polignac number, because 31421541 - 2⁶ = 31421477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421561) 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, 4870 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (5244380).

Almost surely, 2^31421541 is an apocalyptic number.

It is an amenable number.

31421541 is a deficient number, since it is larger than the sum of its proper divisors (10533499).

31421541 is a wasteful number, since it uses less digits than its factorization.

31421541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14915.

The product of its digits is 480, while the sum is 21.

The square root of 31421541 is about 5605.4920390631. The cubic root of 31421541 is about 315.5555527499. Note that the first 5 decimals are identical.

Adding to 31421541 its reverse (14512413), we get a palindrome (45933954).

The spelling of 31421541 in words is "thirty-one million, four hundred twenty-one thousand, five hundred forty-one".