141311021 has 4 divisors (see below), whose sum is σ = 149623452. Its totient is φ = 132998592.

The previous prime is 141311003. The next prime is 141311039. The reversal of 141311021 is 120113141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120113141 = 103 ⋅1166147.

It is an interprime number because it is at equal distance from previous prime (141311003) and next prime (141311039).

It can be written as a sum of positive squares in 2 ways, for example, as 71588521 + 69722500 = 8461^2 + 8350^2 .

It is a cyclic number.

It is not a de Polignac number, because 141311021 - 2¹⁸ = 141048877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 141310987 and 141311005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141311081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4156190 + ... + 4156223.

It is an arithmetic number, because the mean of its divisors is an integer number (37405863).

Almost surely, 2^141311021 is an apocalyptic number.

It is an amenable number.

141311021 is a deficient number, since it is larger than the sum of its proper divisors (8312431).

141311021 is an equidigital number, since it uses as much as digits as its factorization.

141311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312430.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 141311021 is about 11887.4312195697. The cubic root of 141311021 is about 520.8652028769.

Adding to 141311021 its reverse (120113141), we get a palindrome (261424162).

The spelling of 141311021 in words is "one hundred forty-one million, three hundred eleven thousand, twenty-one".