140103581 has 2 divisors, whose sum is σ = 140103582. Its totient is φ = 140103580.

The previous prime is 140103563. The next prime is 140103617. The reversal of 140103581 is 185301041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140043556 + 60025 = 11834^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 140103581 - 2¹⁸ = 139841437 is a prime.

It is a super-2 number, since 2×140103581² = 39258026818047122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140103781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70051790 + 70051791.

It is an arithmetic number, because the mean of its divisors is an integer number (70051791).

Almost surely, 2^140103581 is an apocalyptic number.

It is an amenable number.

140103581 is a deficient number, since it is larger than the sum of its proper divisors (1).

140103581 is an equidigital number, since it uses as much as digits as its factorization.

140103581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 140103581 is about 11836.5358530273. The cubic root of 140103581 is about 519.3774366476.

The spelling of 140103581 in words is "one hundred forty million, one hundred three thousand, five hundred eighty-one".