612533431 has 2 divisors, whose sum is σ = 612533432. Its totient is φ = 612533430.

The previous prime is 612533423. The next prime is 612533473. The reversal of 612533431 is 134335216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612533431 - 2³ = 612533423 is a prime.

It is a super-2 number, since 2×612533431² = 750394408185263522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 612533431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612533231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306266715 + 306266716.

It is an arithmetic number, because the mean of its divisors is an integer number (306266716).

Almost surely, 2^612533431 is an apocalyptic number.

612533431 is a deficient number, since it is larger than the sum of its proper divisors (1).

612533431 is an equidigital number, since it uses as much as digits as its factorization.

612533431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 612533431 is about 24749.4127405076. The cubic root of 612533431 is about 849.2650768680.

Adding to 612533431 its reverse (134335216), we get a palindrome (746868647).

The spelling of 612533431 in words is "six hundred twelve million, five hundred thirty-three thousand, four hundred thirty-one".