472640431 has 2 divisors, whose sum is σ = 472640432. Its totient is φ = 472640430.

The previous prime is 472640423. The next prime is 472640437. The reversal of 472640431 is 134046274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 472640431 - 2³ = 472640423 is a prime.

It is a super-2 number, since 2×472640431² = 446777954031731522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 472640393 and 472640402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472640437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236320215 + 236320216.

It is an arithmetic number, because the mean of its divisors is an integer number (236320216).

Almost surely, 2^472640431 is an apocalyptic number.

472640431 is a deficient number, since it is larger than the sum of its proper divisors (1).

472640431 is an equidigital number, since it uses as much as digits as its factorization.

472640431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 472640431 is about 21740.2950991931. The cubic root of 472640431 is about 778.9512702947.

The spelling of 472640431 in words is "four hundred seventy-two million, six hundred forty thousand, four hundred thirty-one".