53812431 has 20 divisors (see below), whose sum is σ = 81711784. Its totient is φ = 35283600.

The previous prime is 53812417. The next prime is 53812439. The reversal of 53812431 is 13421835.

It is a happy number.

53812431 is a `hidden beast` number, since 538 + 124 + 3 + 1 = 666.

It is not a de Polignac number, because 53812431 - 2¹⁹ = 53288143 is a prime.

It is a super-2 number, since 2×53812431² = 5791555460259522, which contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53812395 and 53812404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53812439) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 505 + ... + 10386.

Almost surely, 2^53812431 is an apocalyptic number.

53812431 is a deficient number, since it is larger than the sum of its proper divisors (27899353).

53812431 is a wasteful number, since it uses less digits than its factorization.

53812431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10964 (or 10955 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 53812431 is about 7335.6956725317. The cubic root of 53812431 is about 377.5381737050.

The spelling of 53812431 in words is "fifty-three million, eight hundred twelve thousand, four hundred thirty-one".