1147611631 has 2 divisors, whose sum is σ = 1147611632. Its totient is φ = 1147611630.

The previous prime is 1147611629. The next prime is 1147611653. The reversal of 1147611631 is 1361167411.

It is a weak prime.

It is an emirp because it is prime and its reverse (1361167411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1147611631 - 2¹ = 1147611629 is a prime.

It is a super-2 number, since 2×1147611631² = 2634024911212960322, which contains 22 as substring.

Together with 1147611629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1147611593 and 1147611602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147611601) 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, 573805815 + 573805816.

It is an arithmetic number, because the mean of its divisors is an integer number (573805816).

Almost surely, 2^1147611631 is an apocalyptic number.

1147611631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147611631 is an equidigital number, since it uses as much as digits as its factorization.

1147611631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 1147611631 is about 33876.4170330925. The cubic root of 1147611631 is about 1046.9637550485.

The spelling of 1147611631 in words is "one billion, one hundred forty-seven million, six hundred eleven thousand, six hundred thirty-one".