1187131701 has 32 divisors (see below), whose sum is σ = 1874534400. Its totient is φ = 653941440.

The previous prime is 1187131681. The next prime is 1187131711. The reversal of 1187131701 is 1071317811.

It is a happy number.

It is not a de Polignac number, because 1187131701 - 2⁵ = 1187131669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187131711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171730 + ... + 178508.

It is an arithmetic number, because the mean of its divisors is an integer number (58579200).

Almost surely, 2^1187131701 is an apocalyptic number.

It is an amenable number.

1187131701 is a deficient number, since it is larger than the sum of its proper divisors (687402699).

1187131701 is a wasteful number, since it uses less digits than its factorization.

1187131701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089.

The product of its (nonzero) digits is 1176, while the sum is 30.

The square root of 1187131701 is about 34454.7776222689. Note that the first 3 decimals coincide. The cubic root of 1187131701 is about 1058.8464075796.

The spelling of 1187131701 in words is "one billion, one hundred eighty-seven million, one hundred thirty-one thousand, seven hundred one".