131001034120421 has 2 divisors, whose sum is σ = 131001034120422. Its totient is φ = 131001034120420.

The previous prime is 131001034120399. The next prime is 131001034120493. The reversal of 131001034120421 is 124021430100131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70678069350625 + 60322964769796 = 8407025^2 + 7766786^2 .

It is an emirp because it is prime and its reverse (124021430100131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131001034120421 is a prime.

It is a super-2 number, since 2×131001034120421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131001034120721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65500517060210 + 65500517060211.

It is an arithmetic number, because the mean of its divisors is an integer number (65500517060211).

Almost surely, 2^{131001034120421} is an apocalyptic number.

It is an amenable number.

131001034120421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131001034120421 is an equidigital number, since it uses as much as digits as its factorization.

131001034120421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 131001034120421 its reverse (124021430100131), we get a palindrome (255022464220552).

The spelling of 131001034120421 in words is "one hundred thirty-one trillion, one billion, thirty-four million, one hundred twenty thousand, four hundred twenty-one".