431061523 has 2 divisors, whose sum is σ = 431061524. Its totient is φ = 431061522.

The previous prime is 431061511. The next prime is 431061529. The reversal of 431061523 is 325160134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431061523 is a prime.

It is a super-2 number, since 2×431061523² = 371628073222159058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (431061529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215530761 + 215530762.

It is an arithmetic number, because the mean of its divisors is an integer number (215530762).

Almost surely, 2^431061523 is an apocalyptic number.

431061523 is a deficient number, since it is larger than the sum of its proper divisors (1).

431061523 is an equidigital number, since it uses as much as digits as its factorization.

431061523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 431061523 is about 20762.0211684701. The cubic root of 431061523 is about 755.4048224450.

The spelling of 431061523 in words is "four hundred thirty-one million, sixty-one thousand, five hundred twenty-three".