1023311040 has 56 divisors (see below), whose sum is σ = 3249015600. Its totient is φ = 272882688.

The previous prime is 1023311027. The next prime is 1023311041. The reversal of 1023311040 is 401133201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1023311041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532015 + ... + 533934.

Almost surely, 2^1023311040 is an apocalyptic number.

1023311040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023311040 is an abundant number, since it is smaller than the sum of its proper divisors (2225704560).

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

1023311040 is a wasteful number, since it uses less digits than its factorization.

1023311040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065969 (or 1065959 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1023311040 is about 31989.2331886840. The cubic root of 1023311040 is about 1007.7107383653.

Adding to 1023311040 its reverse (401133201), we get a palindrome (1424444241).

The spelling of 1023311040 in words is "one billion, twenty-three million, three hundred eleven thousand, forty".