1311148395242 has 16 divisors (see below), whose sum is σ = 2248726992192. Its totient is φ = 561659733600.

The previous prime is 1311148395199. The next prime is 1311148395253. The reversal of 1311148395242 is 2425938411131.

It is a super-2 number, since 2×1311148395242² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311148395193 and 1311148395202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21719384 + ... + 21779667.

It is an arithmetic number, because the mean of its divisors is an integer number (140545437012).

Almost surely, 2^{1311148395242} is an apocalyptic number.

1311148395242 is a deficient number, since it is larger than the sum of its proper divisors (937578596950).

1311148395242 is a wasteful number, since it uses less digits than its factorization.

1311148395242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43501213.

The product of its digits is 207360, while the sum is 44.

The spelling of 1311148395242 in words is "one trillion, three hundred eleven billion, one hundred forty-eight million, three hundred ninety-five thousand, two hundred forty-two".