1231040223337 has 2 divisors, whose sum is σ = 1231040223338. Its totient is φ = 1231040223336.

The previous prime is 1231040223227. The next prime is 1231040223353. The reversal of 1231040223337 is 7333220401321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080635095296 + 150405128041 = 1039536^2 + 387821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231040223337 is a prime.

It is a super-2 number, since 2×1231040223337² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231040223299 and 1231040223308.

It is not a weakly prime, because it can be changed into another prime (1231040223377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615520111668 + 615520111669.

It is an arithmetic number, because the mean of its divisors is an integer number (615520111669).

Almost surely, 2^{1231040223337} is an apocalyptic number.

It is an amenable number.

1231040223337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231040223337 is an equidigital number, since it uses as much as digits as its factorization.

1231040223337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 31.

Adding to 1231040223337 its reverse (7333220401321), we get a palindrome (8564260624658).

The spelling of 1231040223337 in words is "one trillion, two hundred thirty-one billion, forty million, two hundred twenty-three thousand, three hundred thirty-seven".