531322408 has 8 divisors (see below), whose sum is σ = 996229530. Its totient is φ = 265661200.

The previous prime is 531322399. The next prime is 531322417. The reversal of 531322408 is 804223135.

It is an interprime number because it is at equal distance from previous prime (531322399) and next prime (531322417).

It can be written as a sum of positive squares in only one way, i.e., 519748804 + 11573604 = 22798^2 + 3402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33207643 + ... + 33207658.

Almost surely, 2^531322408 is an apocalyptic number.

It is an amenable number.

531322408 is a deficient number, since it is larger than the sum of its proper divisors (464907122).

531322408 is a wasteful number, since it uses less digits than its factorization.

531322408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66415307 (or 66415303 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 531322408 is about 23050.4318397725. The cubic root of 531322408 is about 809.9397445397.

The spelling of 531322408 in words is "five hundred thirty-one million, three hundred twenty-two thousand, four hundred eight".