743131631 has 8 divisors (see below), whose sum is σ = 811938384. Its totient is φ = 674533120.

The previous prime is 743131579. The next prime is 743131637. The reversal of 743131631 is 136131347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-743131631 is a prime.

It is a super-2 number, since 2×743131631² = 1104489241985440322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 743131594 and 743131603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743131637) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 44546 + ... + 58911.

It is an arithmetic number, because the mean of its divisors is an integer number (101492298).

Almost surely, 2^743131631 is an apocalyptic number.

743131631 is a deficient number, since it is larger than the sum of its proper divisors (68806753).

743131631 is a wasteful number, since it uses less digits than its factorization.

743131631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104121.

The product of its digits is 4536, while the sum is 29.

The square root of 743131631 is about 27260.4407704644. The cubic root of 743131631 is about 905.7783078992.

Adding to 743131631 its reverse (136131347), we get a palindrome (879262978).

It can be divided in two parts, 7431316 and 31, that added together give a palindrome (7431347).

The spelling of 743131631 in words is "seven hundred forty-three million, one hundred thirty-one thousand, six hundred thirty-one".