1200311102131 has 2 divisors, whose sum is σ = 1200311102132. Its totient is φ = 1200311102130.

The previous prime is 1200311102059. The next prime is 1200311102233. The reversal of 1200311102131 is 1312011130021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200311102131 - 2¹³ = 1200311093939 is a prime.

It is a super-2 number, since 2×1200311102131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200311142131) 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, 600155551065 + 600155551066.

It is an arithmetic number, because the mean of its divisors is an integer number (600155551066).

Almost surely, 2^{1200311102131} is an apocalyptic number.

1200311102131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200311102131 is an equidigital number, since it uses as much as digits as its factorization.

1200311102131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1200311102131 its reverse (1312011130021), we get a palindrome (2512322232152).

The spelling of 1200311102131 in words is "one trillion, two hundred billion, three hundred eleven million, one hundred two thousand, one hundred thirty-one".