431012251551 has 24 divisors (see below), whose sum is σ = 668884139904. Its totient is φ = 246154431600.

The previous prime is 431012251531. The next prime is 431012251609. The reversal of 431012251551 is 155152210134.

It is not a de Polignac number, because 431012251551 - 2⁶ = 431012251487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431012251531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 560125 + ... + 1084326.

It is an arithmetic number, because the mean of its divisors is an integer number (27870172496).

Almost surely, 2^431012251551 is an apocalyptic number.

431012251551 is a deficient number, since it is larger than the sum of its proper divisors (237871888353).

431012251551 is a wasteful number, since it uses less digits than its factorization.

431012251551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646251 (or 1646244 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 431012251551 its reverse (155152210134), we get a palindrome (586164461685).

The spelling of 431012251551 in words is "four hundred thirty-one billion, twelve million, two hundred fifty-one thousand, five hundred fifty-one".