1311213431022 has 32 divisors (see below), whose sum is σ = 2909317944960. Its totient is φ = 390602869920.

The previous prime is 1311213430979. The next prime is 1311213431051. The reversal of 1311213431022 is 2201343121131.

It is a junction number, because it is equal to n+sod(n) for n = 1311213430983 and 1311213431001.

It is a congruent number.

It is an unprimeable number.

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, 168359413 + ... + 168367200.

It is an arithmetic number, because the mean of its divisors is an integer number (90916185780).

Almost surely, 2^{1311213431022} is an apocalyptic number.

1311213431022 is an abundant number, since it is smaller than the sum of its proper divisors (1598104513938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311213431022 is a wasteful number, since it uses less digits than its factorization.

1311213431022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336726688.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1311213431022 its reverse (2201343121131), we get a palindrome (3512556552153).

The spelling of 1311213431022 in words is "one trillion, three hundred eleven billion, two hundred thirteen million, four hundred thirty-one thousand, twenty-two".