131031021420243 has 12 divisors (see below), whose sum is σ = 216305178217648. Its totient is φ = 74874869382960.

The previous prime is 131031021420217. The next prime is 131031021420283. The reversal of 131031021420243 is 342024120130131.

131031021420243 is a `hidden beast` number, since 1 + 310 + 3 + 102 + 1 + 4 + 2 + 0 + 243 = 666.

It is not a de Polignac number, because 131031021420243 - 2¹³ = 131031021412051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131031021420283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1039928741368 + ... + 1039928741493.

Almost surely, 2^{131031021420243} is an apocalyptic number.

131031021420243 is a deficient number, since it is larger than the sum of its proper divisors (85274156797405).

131031021420243 is a wasteful number, since it uses less digits than its factorization.

131031021420243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079857482874 (or 2079857482871 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 131031021420243 its reverse (342024120130131), we get a palindrome (473055141550374).

The spelling of 131031021420243 in words is "one hundred thirty-one trillion, thirty-one billion, twenty-one million, four hundred twenty thousand, two hundred forty-three".