1151631005 has 16 divisors (see below), whose sum is σ = 1601627904. Its totient is φ = 778565760.

The previous prime is 1151630993. The next prime is 1151631007. The reversal of 1151631005 is 5001361511.

It is not a de Polignac number, because 1151631005 - 2⁶ = 1151630941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151631007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229232 + ... + 234201.

It is an arithmetic number, because the mean of its divisors is an integer number (100101744).

Almost surely, 2^1151631005 is an apocalyptic number.

It is an amenable number.

1151631005 is a deficient number, since it is larger than the sum of its proper divisors (449996899).

1151631005 is an equidigital number, since it uses as much as digits as its factorization.

1151631005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463516.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 1151631005 is about 33935.6892518776. The cubic root of 1151631005 is about 1048.1846197508.

Adding to 1151631005 its reverse (5001361511), we get a palindrome (6152992516).

The spelling of 1151631005 in words is "one billion, one hundred fifty-one million, six hundred thirty-one thousand, five".