361011631 has 2 divisors, whose sum is σ = 361011632. Its totient is φ = 361011630.

The previous prime is 361011613. The next prime is 361011697. The reversal of 361011631 is 136110163.

It is a happy number.

Together with previous prime (361011613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361011631 - 2²³ = 352623023 is a prime.

It is a super-2 number, since 2×361011631² = 260658795434560322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361014631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180505815 + 180505816.

It is an arithmetic number, because the mean of its divisors is an integer number (180505816).

Almost surely, 2^361011631 is an apocalyptic number.

361011631 is a deficient number, since it is larger than the sum of its proper divisors (1).

361011631 is an equidigital number, since it uses as much as digits as its factorization.

361011631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 361011631 is about 19000.3060764820. The cubic root of 361011631 is about 712.0443828065.

Adding to 361011631 its reverse (136110163), we get a palindrome (497121794).

The spelling of 361011631 in words is "three hundred sixty-one million, eleven thousand, six hundred thirty-one".