1187280023 has 2 divisors, whose sum is σ = 1187280024. Its totient is φ = 1187280022.

The previous prime is 1187280007. The next prime is 1187280043. The reversal of 1187280023 is 3200827811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1187280023 - 2⁴ = 1187280007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187280043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593640011 + 593640012.

It is an arithmetic number, because the mean of its divisors is an integer number (593640012).

Almost surely, 2^1187280023 is an apocalyptic number.

1187280023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187280023 is an equidigital number, since it uses as much as digits as its factorization.

1187280023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1187280023 is about 34456.9299706169. The cubic root of 1187280023 is about 1058.8905036914.

The spelling of 1187280023 in words is "one billion, one hundred eighty-seven million, two hundred eighty thousand, twenty-three".