712281785331 has 32 divisors (see below), whose sum is σ = 988959944448. Its totient is φ = 455607192960.

The previous prime is 712281785321. The next prime is 712281785353. The reversal of 712281785331 is 133587182217.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-712281785331 is a prime.

It is a super-2 number, since 2×712281785331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (712281785321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4912780 + ... + 5055686.

It is an arithmetic number, because the mean of its divisors is an integer number (30904998264).

Almost surely, 2^712281785331 is an apocalyptic number.

712281785331 is a deficient number, since it is larger than the sum of its proper divisors (276678159117).

712281785331 is a wasteful number, since it uses less digits than its factorization.

712281785331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143571.

The product of its digits is 564480, while the sum is 48.

The spelling of 712281785331 in words is "seven hundred twelve billion, two hundred eighty-one million, seven hundred eighty-five thousand, three hundred thirty-one".