531261632 has 84 divisors (see below), whose sum is σ = 1196693568. Its totient is φ = 233587200.

The previous prime is 531261631. The next prime is 531261637. The reversal of 531261632 is 236162135.

It is a junction number, because it is equal to n+sod(n) for n = 531261595 and 531261604.

It is not an unprimeable number, because it can be changed into a prime (531261631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238958 + ... + 241170.

It is an arithmetic number, because the mean of its divisors is an integer number (14246352).

Almost surely, 2^531261632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531261632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598346784).

531261632 is an abundant number, since it is smaller than the sum of its proper divisors (665431936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531261632 is a wasteful number, since it uses less digits than its factorization.

531261632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278 (or 2257 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 531261632 is about 23049.1134753595. The cubic root of 531261632 is about 809.9088613609.

The spelling of 531261632 in words is "five hundred thirty-one million, two hundred sixty-one thousand, six hundred thirty-two".