1151631511 has 2 divisors, whose sum is σ = 1151631512. Its totient is φ = 1151631510.

The previous prime is 1151631487. The next prime is 1151631521. The reversal of 1151631511 is 1151361511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1151631511 - 2⁵ = 1151631479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151631521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575815755 + 575815756.

It is an arithmetic number, because the mean of its divisors is an integer number (575815756).

Almost surely, 2^1151631511 is an apocalyptic number.

1151631511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151631511 is an equidigital number, since it uses as much as digits as its factorization.

1151631511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 25.

The square root of 1151631511 is about 33935.6967071548. The cubic root of 1151631511 is about 1048.1847732667.

The spelling of 1151631511 in words is "one billion, one hundred fifty-one million, six hundred thirty-one thousand, five hundred eleven".