800137631 has 2 divisors, whose sum is σ = 800137632. Its totient is φ = 800137630.

The previous prime is 800137627. The next prime is 800137699. The reversal of 800137631 is 136731008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800137631 - 2² = 800137627 is a prime.

It is a super-2 number, since 2×800137631² = 1280440457084584322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 800137594 and 800137603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800637631) 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 as a sum of consecutive naturals, namely, 400068815 + 400068816.

It is an arithmetic number, because the mean of its divisors is an integer number (400068816).

Almost surely, 2^800137631 is an apocalyptic number.

800137631 is a deficient number, since it is larger than the sum of its proper divisors (1).

800137631 is an equidigital number, since it uses as much as digits as its factorization.

800137631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 800137631 is about 28286.7041381636. The cubic root of 800137631 is about 928.3709992127.

Adding to 800137631 its reverse (136731008), we get a palindrome (936868639).

The spelling of 800137631 in words is "eight hundred million, one hundred thirty-seven thousand, six hundred thirty-one".