531031464 has 40 divisors (see below), whose sum is σ = 1487381610. Its totient is φ = 177010272.

The previous prime is 531031451. The next prime is 531031469. The reversal of 531031464 is 464130135.

It can be written as a sum of positive squares in only one way, i.e., 336428964 + 194602500 = 18342^2 + 13950^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (531031469) 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 9 ways as a sum of consecutive naturals, for example, 409099 + ... + 410394.

Almost surely, 2^531031464 is an apocalyptic number.

531031464 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

531031464 is an abundant number, since it is smaller than the sum of its proper divisors (956350146).

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

531031464 is a wasteful number, since it uses less digits than its factorization.

531031464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819511 (or 819498 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 531031464 is about 23044.1199441419. The cubic root of 531031464 is about 809.7918806873.

Adding to 531031464 its reverse (464130135), we get a palindrome (995161599).

The spelling of 531031464 in words is "five hundred thirty-one million, thirty-one thousand, four hundred sixty-four".