1023151440 has 40 divisors (see below), whose sum is σ = 3171770208. Its totient is φ = 272840320.

The previous prime is 1023151369. The next prime is 1023151457. The reversal of 1023151440 is 441513201.

1023151440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2131326 + ... + 2131805.

Almost surely, 2^1023151440 is an apocalyptic number.

1023151440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023151440 is an abundant number, since it is smaller than the sum of its proper divisors (2148618768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023151440 is a wasteful number, since it uses less digits than its factorization.

1023151440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263147 (or 4263141 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1023151440 is about 31986.7385020730. The cubic root of 1023151440 is about 1007.6583466715.

Adding to 1023151440 its reverse (441513201), we get a palindrome (1464664641).

The spelling of 1023151440 in words is "one billion, twenty-three million, one hundred fifty-one thousand, four hundred forty".