431555061 has 32 divisors (see below), whose sum is σ = 702259200. Its totient is φ = 230408640.

The previous prime is 431555057. The next prime is 431555071. The reversal of 431555061 is 160555134.

It is not a de Polignac number, because 431555061 - 2² = 431555057 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431555011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7450 + ... + 30308.

It is an arithmetic number, because the mean of its divisors is an integer number (21945600).

Almost surely, 2^431555061 is an apocalyptic number.

It is an amenable number.

431555061 is a deficient number, since it is larger than the sum of its proper divisors (270704139).

431555061 is a wasteful number, since it uses less digits than its factorization.

431555061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22929.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 431555061 is about 20773.9033645581. The cubic root of 431555061 is about 755.6930092973.

The spelling of 431555061 in words is "four hundred thirty-one million, five hundred fifty-five thousand, sixty-one".