424349531 has 2 divisors, whose sum is σ = 424349532. Its totient is φ = 424349530.

The previous prime is 424349509. The next prime is 424349543. The reversal of 424349531 is 135943424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424349531 is a prime.

It is a super-2 number, since 2×424349531² = 360145048919839922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 424349491 and 424349500.

It is not a weakly prime, because it can be changed into another prime (424349501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212174765 + 212174766.

It is an arithmetic number, because the mean of its divisors is an integer number (212174766).

Almost surely, 2^424349531 is an apocalyptic number.

424349531 is a deficient number, since it is larger than the sum of its proper divisors (1).

424349531 is an equidigital number, since it uses as much as digits as its factorization.

424349531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 424349531 is about 20599.7458964911. The cubic root of 424349531 is about 751.4635309858.

The spelling of 424349531 in words is "four hundred twenty-four million, three hundred forty-nine thousand, five hundred thirty-one".