424172431 has 2 divisors, whose sum is σ = 424172432. Its totient is φ = 424172430.

The previous prime is 424172407. The next prime is 424172447. The reversal of 424172431 is 134271424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 424172431 - 2⁹ = 424171919 is a prime.

It is a super-2 number, since 2×424172431² = 359844502440899522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424172431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424172461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212086215 + 212086216.

It is an arithmetic number, because the mean of its divisors is an integer number (212086216).

Almost surely, 2^424172431 is an apocalyptic number.

424172431 is a deficient number, since it is larger than the sum of its proper divisors (1).

424172431 is an equidigital number, since it uses as much as digits as its factorization.

424172431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 424172431 is about 20595.4468511853. The cubic root of 424172431 is about 751.3589766818.

The spelling of 424172431 in words is "four hundred twenty-four million, one hundred seventy-two thousand, four hundred thirty-one".