1088311997 has 2 divisors, whose sum is σ = 1088311998. Its totient is φ = 1088311996.

The previous prime is 1088311993. The next prime is 1088312081. The reversal of 1088311997 is 7991138801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1084977721 + 3334276 = 32939^2 + 1826^2 .

It is a cyclic number.

It is not a de Polignac number, because 1088311997 - 2² = 1088311993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1088311993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544155998 + 544155999.

It is an arithmetic number, because the mean of its divisors is an integer number (544155999).

Almost surely, 2^1088311997 is an apocalyptic number.

It is an amenable number.

1088311997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1088311997 is an equidigital number, since it uses as much as digits as its factorization.

1088311997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 47.

The square root of 1088311997 is about 32989.5740651497. The cubic root of 1088311997 is about 1028.6109396299.

The spelling of 1088311997 in words is "one billion, eighty-eight million, three hundred eleven thousand, nine hundred ninety-seven".