131039286421 has 2 divisors, whose sum is σ = 131039286422. Its totient is φ = 131039286420.

The previous prime is 131039286373. The next prime is 131039286461. The reversal of 131039286421 is 124682930131.

It is a happy number.

It is an a-pointer prime, because the next prime (131039286461) can be obtained adding 131039286421 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74521356196 + 56517930225 = 272986^2 + 237735^2 .

It is a cyclic number.

It is not a de Polignac number, because 131039286421 - 2¹¹ = 131039284373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131039286461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65519643210 + 65519643211.

It is an arithmetic number, because the mean of its divisors is an integer number (65519643211).

Almost surely, 2^131039286421 is an apocalyptic number.

It is an amenable number.

131039286421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131039286421 is an equidigital number, since it uses as much as digits as its factorization.

131039286421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 131039286421 in words is "one hundred thirty-one billion, thirty-nine million, two hundred eighty-six thousand, four hundred twenty-one".