385424531 has 2 divisors, whose sum is σ = 385424532. Its totient is φ = 385424530.

The previous prime is 385424509. The next prime is 385424539. The reversal of 385424531 is 135424583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385424531 - 2⁶ = 385424467 is a prime.

It is a super-2 number, since 2×385424531² = 297104138193139922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 385424491 and 385424500.

It is not a weakly prime, because it can be changed into another prime (385424539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192712265 + 192712266.

It is an arithmetic number, because the mean of its divisors is an integer number (192712266).

Almost surely, 2^385424531 is an apocalyptic number.

385424531 is a deficient number, since it is larger than the sum of its proper divisors (1).

385424531 is an equidigital number, since it uses as much as digits as its factorization.

385424531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 35.

The square root of 385424531 is about 19632.2319413764. The cubic root of 385424531 is about 727.7459282002.

The spelling of 385424531 in words is "three hundred eighty-five million, four hundred twenty-four thousand, five hundred thirty-one".