713031681 has 4 divisors (see below), whose sum is σ = 950708912. Its totient is φ = 475354452.

The previous prime is 713031659. The next prime is 713031703. The reversal of 713031681 is 186130317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186130317 = 3 ⋅62043439.

It is an interprime number because it is at equal distance from previous prime (713031659) and next prime (713031703).

It is not a de Polignac number, because 713031681 - 2⁶ = 713031617 is a prime.

It is a super-2 number, since 2×713031681² = 1016828356219371522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (713031481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118838611 + ... + 118838616.

It is an arithmetic number, because the mean of its divisors is an integer number (237677228).

It is a Proth number, since it is equal to 85 ⋅ 2²³ + 1 and 85 < 2²³.

Almost surely, 2^713031681 is an apocalyptic number.

It is an amenable number.

713031681 is a deficient number, since it is larger than the sum of its proper divisors (237677231).

713031681 is a wasteful number, since it uses less digits than its factorization.

713031681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237677230.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 713031681 is about 26702.6530704348. The cubic root of 713031681 is about 893.3801024220.

Adding to 713031681 its reverse (186130317), we get a palindrome (899161998).

The spelling of 713031681 in words is "seven hundred thirteen million, thirty-one thousand, six hundred eighty-one".