553431231 has 16 divisors (see below), whose sum is σ = 821318400. Its totient is φ = 368315064.

The previous prime is 553431227. The next prime is 553431239. The reversal of 553431231 is 132134355.

553431231 is a `hidden beast` number, since 5 + 534 + 3 + 123 + 1 = 666.

It is not a de Polignac number, because 553431231 - 2² = 553431227 is a prime.

It is a super-2 number, since 2×553431231² = 612572254892350722, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 553431195 and 553431204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553431239) 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 15 ways as a sum of consecutive naturals, for example, 1611 + ... + 33308.

It is an arithmetic number, because the mean of its divisors is an integer number (51332400).

Almost surely, 2^553431231 is an apocalyptic number.

553431231 is a deficient number, since it is larger than the sum of its proper divisors (267887169).

553431231 is a wasteful number, since it uses less digits than its factorization.

553431231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35515 (or 35509 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 553431231 is about 23525.1191495389. The cubic root of 553431231 is about 821.0215460961.

Adding to 553431231 its reverse (132134355), we get a palindrome (685565586).

The spelling of 553431231 in words is "five hundred fifty-three million, four hundred thirty-one thousand, two hundred thirty-one".