711431994 has 64 divisors (see below), whose sum is σ = 1759371264. Its totient is φ = 186757056.

The previous prime is 711431977. The next prime is 711432023. The reversal of 711431994 is 499134117.

It is a super-2 number, since 2×711431994² = 1012270964173632072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118837 + ... + 124679.

It is an arithmetic number, because the mean of its divisors is an integer number (27490176).

Almost surely, 2^711431994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 711431994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879685632).

711431994 is an abundant number, since it is smaller than the sum of its proper divisors (1047939270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

711431994 is a wasteful number, since it uses less digits than its factorization.

711431994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091.

The product of its digits is 27216, while the sum is 39.

The square root of 711431994 is about 26672.6825422566. The cubic root of 711431994 is about 892.7115025742.

It can be divided in two parts, 71143 and 1994, that added together give a palindrome (73137).

The spelling of 711431994 in words is "seven hundred eleven million, four hundred thirty-one thousand, nine hundred ninety-four".