431450342155 has 32 divisors (see below), whose sum is σ = 623012198400. Its totient is φ = 280205557632.

The previous prime is 431450342149. The next prime is 431450342201. The reversal of 431450342155 is 551243054134.

It is not a de Polignac number, because 431450342155 - 2⁹ = 431450341643 is a prime.

It is a super-2 number, since 2×431450342155² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2457441 + ... + 2627149.

It is an arithmetic number, because the mean of its divisors is an integer number (19469131200).

Almost surely, 2^431450342155 is an apocalyptic number.

431450342155 is a deficient number, since it is larger than the sum of its proper divisors (191561856245).

431450342155 is a wasteful number, since it uses less digits than its factorization.

431450342155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173563.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 431450342155 its reverse (551243054134), we get a palindrome (982693396289).

The spelling of 431450342155 in words is "four hundred thirty-one billion, four hundred fifty million, three hundred forty-two thousand, one hundred fifty-five".