1187711323 has 2 divisors, whose sum is σ = 1187711324. Its totient is φ = 1187711322.

The previous prime is 1187711309. The next prime is 1187711347. The reversal of 1187711323 is 3231177811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1187711323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1187711303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593855661 + 593855662.

It is an arithmetic number, because the mean of its divisors is an integer number (593855662).

Almost surely, 2^1187711323 is an apocalyptic number.

1187711323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187711323 is an equidigital number, since it uses as much as digits as its factorization.

1187711323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 34.

The square root of 1187711323 is about 34463.1879401776. The cubic root of 1187711323 is about 1059.0187082641.

The spelling of 1187711323 in words is "one billion, one hundred eighty-seven million, seven hundred eleven thousand, three hundred twenty-three".