431139939653 has 2 divisors, whose sum is σ = 431139939654. Its totient is φ = 431139939652.

The previous prime is 431139939583. The next prime is 431139939701. The reversal of 431139939653 is 356939931134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318889478209 + 112250461444 = 564703^2 + 335038^2 .

It is a cyclic number.

It is not a de Polignac number, because 431139939653 - 2²⁶ = 431072830789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431139939553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215569969826 + 215569969827.

It is an arithmetic number, because the mean of its divisors is an integer number (215569969827).

Almost surely, 2^431139939653 is an apocalyptic number.

It is an amenable number.

431139939653 is a deficient number, since it is larger than the sum of its proper divisors (1).

431139939653 is an equidigital number, since it uses as much as digits as its factorization.

431139939653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7085880, while the sum is 56.

The spelling of 431139939653 in words is "four hundred thirty-one billion, one hundred thirty-nine million, nine hundred thirty-nine thousand, six hundred fifty-three".