1212310311131 has 16 divisors (see below), whose sum is σ = 1351712772000. Its totient is φ = 1080520616448.

The previous prime is 1212310311109. The next prime is 1212310311151. The reversal of 1212310311131 is 1311130132121.

It is a cyclic number.

It is not a de Polignac number, because 1212310311131 - 2³⁸ = 937432404187 is a prime.

It is a super-2 number, since 2×1212310311131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212310311151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87101 + ... + 1559553.

It is an arithmetic number, because the mean of its divisors is an integer number (84482048250).

Almost surely, 2^{1212310311131} is an apocalyptic number.

1212310311131 is a deficient number, since it is larger than the sum of its proper divisors (139402460869).

1212310311131 is a wasteful number, since it uses less digits than its factorization.

1212310311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475038.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1212310311131 its reverse (1311130132121), we get a palindrome (2523440443252).

The spelling of 1212310311131 in words is "one trillion, two hundred twelve billion, three hundred ten million, three hundred eleven thousand, one hundred thirty-one".