1323131203131 has 32 divisors (see below), whose sum is σ = 1870012666368. Its totient is φ = 829283827200.

The previous prime is 1323131203123. The next prime is 1323131203139. The reversal of 1323131203131 is 1313021313231.

It is an interprime number because it is at equal distance from previous prime (1323131203123) and next prime (1323131203139).

It is not a de Polignac number, because 1323131203131 - 2³ = 1323131203123 is a prime.

It is a super-2 number, since 2×1323131203131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1323131203139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248099941 + ... + 248105273.

It is an arithmetic number, because the mean of its divisors is an integer number (58437895824).

Almost surely, 2^{1323131203131} is an apocalyptic number.

1323131203131 is a deficient number, since it is larger than the sum of its proper divisors (546881463237).

1323131203131 is a wasteful number, since it uses less digits than its factorization.

1323131203131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9811.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1323131203131 its reverse (1313021313231), we get a palindrome (2636152516362).

The spelling of 1323131203131 in words is "one trillion, three hundred twenty-three billion, one hundred thirty-one million, two hundred three thousand, one hundred thirty-one".