963531421 has 4 divisors (see below), whose sum is σ = 963594144. Its totient is φ = 963468700.

The previous prime is 963531377. The next prime is 963531427. The reversal of 963531421 is 124135369.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 124135369 = 257 ⋅483017.

It is a cyclic number.

It is not a de Polignac number, because 963531421 - 2¹¹ = 963529373 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 (963531427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8976 + ... + 44806.

It is an arithmetic number, because the mean of its divisors is an integer number (240898536).

Almost surely, 2^963531421 is an apocalyptic number.

It is an amenable number.

963531421 is a deficient number, since it is larger than the sum of its proper divisors (62723).

963531421 is a wasteful number, since it uses less digits than its factorization.

963531421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62722.

The product of its digits is 19440, while the sum is 34.

The square root of 963531421 is about 31040.8025186206. The cubic root of 963531421 is about 987.6929652495.

The spelling of 963531421 in words is "nine hundred sixty-three million, five hundred thirty-one thousand, four hundred twenty-one".