1023513412 has 12 divisors (see below), whose sum is σ = 1791411580. Its totient is φ = 511681536.

The previous prime is 1023513397. The next prime is 1023513431. The reversal of 1023513412 is 2143153201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106998336 + 916515076 = 10344^2 + 30274^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21388 + ... + 50044.

Almost surely, 2^1023513412 is an apocalyptic number.

It is an amenable number.

1023513412 is a deficient number, since it is larger than the sum of its proper divisors (767898168).

1023513412 is a wasteful number, since it uses less digits than its factorization.

1023513412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37590 (or 37588 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1023513412 is about 31992.3961590876. The cubic root of 1023513412 is about 1007.7771629380. Note that the first 3 decimals are identical.

Adding to 1023513412 its reverse (2143153201), we get a palindrome (3166666613).

The spelling of 1023513412 in words is "one billion, twenty-three million, five hundred thirteen thousand, four hundred twelve".