1243405132131 has 16 divisors (see below), whose sum is σ = 1719020828160. Its totient is φ = 798495737760.

The previous prime is 1243405132127. The next prime is 1243405132133. The reversal of 1243405132131 is 1312315043421.

It is not a de Polignac number, because 1243405132131 - 2² = 1243405132127 is a prime.

It is a super-2 number, since 2×1243405132131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243405132133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16542565 + ... + 16617558.

It is an arithmetic number, because the mean of its divisors is an integer number (107438801760).

Almost surely, 2^{1243405132131} is an apocalyptic number.

1243405132131 is a deficient number, since it is larger than the sum of its proper divisors (475615696029).

1243405132131 is a wasteful number, since it uses less digits than its factorization.

1243405132131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33160586.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 1243405132131 in words is "one trillion, two hundred forty-three billion, four hundred five million, one hundred thirty-two thousand, one hundred thirty-one".