35131021 has 2 divisors, whose sum is σ = 35131022. Its totient is φ = 35131020.

The previous prime is 35131007. The next prime is 35131037. The reversal of 35131021 is 12013153.

It is an a-pointer prime, because the next prime (35131037) can be obtained adding 35131021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 7452900 = 5261^2 + 2730^2 .

It is a cyclic number.

It is not a de Polignac number, because 35131021 - 2¹⁷ = 34999949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 35130986 and 35131004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35131081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17565510 + 17565511.

It is an arithmetic number, because the mean of its divisors is an integer number (17565511).

Almost surely, 2^35131021 is an apocalyptic number.

It is an amenable number.

35131021 is a deficient number, since it is larger than the sum of its proper divisors (1).

35131021 is an equidigital number, since it uses as much as digits as its factorization.

35131021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 35131021 is about 5927.1427349103. The cubic root of 35131021 is about 327.5142926381.

Adding to 35131021 its reverse (12013153), we get a palindrome (47144174).

The spelling of 35131021 in words is "thirty-five million, one hundred thirty-one thousand, twenty-one".