431205471157 has 2 divisors, whose sum is σ = 431205471158. Its totient is φ = 431205471156.

The previous prime is 431205471119. The next prime is 431205471187. The reversal of 431205471157 is 751174502134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334553500836 + 96651970321 = 578406^2 + 310889^2 .

It is a cyclic number.

It is not a de Polignac number, because 431205471157 - 2¹¹ = 431205469109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431205471107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215602735578 + 215602735579.

It is an arithmetic number, because the mean of its divisors is an integer number (215602735579).

Almost surely, 2^431205471157 is an apocalyptic number.

It is an amenable number.

431205471157 is a deficient number, since it is larger than the sum of its proper divisors (1).

431205471157 is an equidigital number, since it uses as much as digits as its factorization.

431205471157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 431205471157 in words is "four hundred thirty-one billion, two hundred five million, four hundred seventy-one thousand, one hundred fifty-seven".