381182312501 has 2 divisors, whose sum is σ = 381182312502. Its totient is φ = 381182312500.

The previous prime is 381182312419. The next prime is 381182312519. The reversal of 381182312501 is 105213281183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339341200900 + 41841111601 = 582530^2 + 204551^2 .

It is an emirp because it is prime and its reverse (105213281183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381182312501 is a prime.

It is a super-2 number, since 2×381182312501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381182312101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190591156250 + 190591156251.

It is an arithmetic number, because the mean of its divisors is an integer number (190591156251).

Almost surely, 2^381182312501 is an apocalyptic number.

It is an amenable number.

381182312501 is a deficient number, since it is larger than the sum of its proper divisors (1).

381182312501 is an equidigital number, since it uses as much as digits as its factorization.

381182312501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

Adding to 381182312501 its reverse (105213281183), we get a palindrome (486395593684).

The spelling of 381182312501 in words is "three hundred eighty-one billion, one hundred eighty-two million, three hundred twelve thousand, five hundred one".