1023131816 has 64 divisors (see below), whose sum is σ = 2297030400. Its totient is φ = 417719808.

The previous prime is 1023131771. The next prime is 1023131867. The reversal of 1023131816 is 6181313201.

It is a super-2 number, since 2×1023131816² = 2093597425822915712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344996 + ... + 347948.

It is an arithmetic number, because the mean of its divisors is an integer number (35891100).

Almost surely, 2^1023131816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023131816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148515200).

1023131816 is an abundant number, since it is smaller than the sum of its proper divisors (1273898584).

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

1023131816 is a wasteful number, since it uses less digits than its factorization.

1023131816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258 (or 3254 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1023131816 is about 31986.4317484774. The cubic root of 1023131816 is about 1007.6519043493.

The spelling of 1023131816 in words is "one billion, twenty-three million, one hundred thirty-one thousand, eight hundred sixteen".