7135235381 has 2 divisors, whose sum is σ = 7135235382. Its totient is φ = 7135235380.

The previous prime is 7135235297. The next prime is 7135235447. The reversal of 7135235381 is 1835325317.

7135235381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6984780625 + 150454756 = 83575^2 + 12266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7135235381 is a prime.

It is a super-2 number, since 2×7135235381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7135232381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3567617690 + 3567617691.

It is an arithmetic number, because the mean of its divisors is an integer number (3567617691).

Almost surely, 2^7135235381 is an apocalyptic number.

It is an amenable number.

7135235381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7135235381 is an equidigital number, since it uses as much as digits as its factorization.

7135235381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 7135235381 is about 84470.3224866580. The cubic root of 7135235381 is about 1925.1715487529.

The spelling of 7135235381 in words is "seven billion, one hundred thirty-five million, two hundred thirty-five thousand, three hundred eighty-one".