3531415421 has 4 divisors (see below), whose sum is σ = 3531944352. Its totient is φ = 3530886492.

The previous prime is 3531415399. The next prime is 3531415439. The reversal of 3531415421 is 1245141353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3531415421 - 2¹⁸ = 3531153277 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 (3531415021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254321 + ... + 267846.

It is an arithmetic number, because the mean of its divisors is an integer number (882986088).

Almost surely, 2^3531415421 is an apocalyptic number.

It is an amenable number.

3531415421 is a deficient number, since it is larger than the sum of its proper divisors (528931).

3531415421 is an equidigital number, since it uses as much as digits as its factorization.

3531415421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528930.

The product of its digits is 7200, while the sum is 29.

The square root of 3531415421 is about 59425.7134664785. The cubic root of 3531415421 is about 1522.8236153197.

Adding to 3531415421 its reverse (1245141353), we get a palindrome (4776556774).

The spelling of 3531415421 in words is "three billion, five hundred thirty-one million, four hundred fifteen thousand, four hundred twenty-one".