1140223231997 has 2 divisors, whose sum is σ = 1140223231998. Its totient is φ = 1140223231996.

The previous prime is 1140223231993. The next prime is 1140223232089. The reversal of 1140223231997 is 7991323220411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1139927770276 + 295461721 = 1067674^2 + 17189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140223231997 - 2² = 1140223231993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140223231993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570111615998 + 570111615999.

It is an arithmetic number, because the mean of its divisors is an integer number (570111615999).

Almost surely, 2^{1140223231997} is an apocalyptic number.

It is an amenable number.

1140223231997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140223231997 is an equidigital number, since it uses as much as digits as its factorization.

1140223231997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 1140223231997 in words is "one trillion, one hundred forty billion, two hundred twenty-three million, two hundred thirty-one thousand, nine hundred ninety-seven".