140462531381 has 2 divisors, whose sum is σ = 140462531382. Its totient is φ = 140462531380.

The previous prime is 140462531329. The next prime is 140462531497. The reversal of 140462531381 is 183135264041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136212664900 + 4249866481 = 369070^2 + 65191^2 .

It is an emirp because it is prime and its reverse (183135264041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140462531381 - 2¹⁰ = 140462530357 is a prime.

It is a super-2 number, since 2×140462531381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140462531581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70231265690 + 70231265691.

It is an arithmetic number, because the mean of its divisors is an integer number (70231265691).

Almost surely, 2^140462531381 is an apocalyptic number.

It is an amenable number.

140462531381 is a deficient number, since it is larger than the sum of its proper divisors (1).

140462531381 is an equidigital number, since it uses as much as digits as its factorization.

140462531381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 140462531381 in words is "one hundred forty billion, four hundred sixty-two million, five hundred thirty-one thousand, three hundred eighty-one".