531350421 has 16 divisors (see below), whose sum is σ = 810123264. Its totient is φ = 303461424.

The previous prime is 531350399. The next prime is 531350437. The reversal of 531350421 is 124053135.

It is not a de Polignac number, because 531350421 - 2¹⁸ = 531088277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531350391 and 531350400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531350461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39100 + ... + 50906.

It is an arithmetic number, because the mean of its divisors is an integer number (50632704).

Almost surely, 2^531350421 is an apocalyptic number.

It is an amenable number.

531350421 is a deficient number, since it is larger than the sum of its proper divisors (278772843).

531350421 is a wasteful number, since it uses less digits than its factorization.

531350421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 531350421 is about 23051.0394776461. The cubic root of 531350421 is about 809.9539784857.

The spelling of 531350421 in words is "five hundred thirty-one million, three hundred fifty thousand, four hundred twenty-one".