1023152381 has 2 divisors, whose sum is σ = 1023152382. Its totient is φ = 1023152380.

The previous prime is 1023152359. The next prime is 1023152437. The reversal of 1023152381 is 1832513201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 926228356 + 96924025 = 30434^2 + 9845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023152381 is a prime.

It is a super-2 number, since 2×1023152381² = 2093681589491938322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1023152381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023152311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511576190 + 511576191.

It is an arithmetic number, because the mean of its divisors is an integer number (511576191).

Almost surely, 2^1023152381 is an apocalyptic number.

It is an amenable number.

1023152381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023152381 is an equidigital number, since it uses as much as digits as its factorization.

1023152381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1023152381 is about 31986.7532112905. The cubic root of 1023152381 is about 1007.6586555884.

Adding to 1023152381 its reverse (1832513201), we get a palindrome (2855665582).

The spelling of 1023152381 in words is "one billion, twenty-three million, one hundred fifty-two thousand, three hundred eighty-one".