1302232381 has 2 divisors, whose sum is σ = 1302232382. Its totient is φ = 1302232380.

The previous prime is 1302232363. The next prime is 1302232397. The reversal of 1302232381 is 1832322031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1185700356 + 116532025 = 34434^2 + 10795^2 .

It is an emirp because it is prime and its reverse (1832322031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1302232381 - 2¹¹ = 1302230333 is a prime.

It is a super-2 number, since 2×1302232381² = 3391618348249858322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302239381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651116190 + 651116191.

It is an arithmetic number, because the mean of its divisors is an integer number (651116191).

Almost surely, 2^1302232381 is an apocalyptic number.

It is an amenable number.

1302232381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302232381 is an equidigital number, since it uses as much as digits as its factorization.

1302232381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1302232381 is about 36086.4570303043. The cubic root of 1302232381 is about 1092.0172449722.

The spelling of 1302232381 in words is "one billion, three hundred two million, two hundred thirty-two thousand, three hundred eighty-one".