34531355421 has 48 divisors (see below), whose sum is σ = 55519726080. Its totient is φ = 20590848000.

The previous prime is 34531355413. The next prime is 34531355447. The reversal of 34531355421 is 12455313543.

34531355421 is a `hidden beast` number, since 3 + 453 + 135 + 54 + 21 = 666.

It is not a de Polignac number, because 34531355421 - 2³ = 34531355413 is a prime.

It is a super-2 number, since 2×34531355421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34531355821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137901 + ... + 296781.

It is an arithmetic number, because the mean of its divisors is an integer number (1156660960).

Almost surely, 2^34531355421 is an apocalyptic number.

34531355421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

34531355421 is a deficient number, since it is larger than the sum of its proper divisors (20988370659).

34531355421 is a wasteful number, since it uses less digits than its factorization.

34531355421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158978 (or 158975 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

Adding to 34531355421 its reverse (12455313543), we get a palindrome (46986668964).

The spelling of 34531355421 in words is "thirty-four billion, five hundred thirty-one million, three hundred fifty-five thousand, four hundred twenty-one".