1023513397 has 2 divisors, whose sum is σ = 1023513398. Its totient is φ = 1023513396.

The previous prime is 1023513389. The next prime is 1023513431. The reversal of 1023513397 is 7933153201.

It is a happy number.

It is an a-pointer prime, because the next prime (1023513431) can be obtained adding 1023513397 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 766680721 + 256832676 = 27689^2 + 16026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023513397 - 2³ = 1023513389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023513797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511756698 + 511756699.

It is an arithmetic number, because the mean of its divisors is an integer number (511756699).

Almost surely, 2^1023513397 is an apocalyptic number.

It is an amenable number.

1023513397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023513397 is an equidigital number, since it uses as much as digits as its factorization.

1023513397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 1023513397 is about 31992.3959246568. The cubic root of 1023513397 is about 1007.7771580149. Note that the first 3 decimals are identical.

Adding to 1023513397 its reverse (7933153201), we get a palindrome (8956666598).

It can be divided in two parts, 10235 and 13397, that added together give a palindrome (23632).

The spelling of 1023513397 in words is "one billion, twenty-three million, five hundred thirteen thousand, three hundred ninety-seven".