1023521070 has 256 divisors, whose sum is σ = 3149798400. Its totient is φ = 209018880.

The previous prime is 1023521069. The next prime is 1023521087. The reversal of 1023521070 is 701253201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2363574 + ... + 2364006.

It is an arithmetic number, because the mean of its divisors is an integer number (12303900).

Almost surely, 2^1023521070 is an apocalyptic number.

1023521070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023521070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574899200).

1023521070 is an abundant number, since it is smaller than the sum of its proper divisors (2126277330).

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

1023521070 is a wasteful number, since it uses less digits than its factorization.

1023521070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1023521070 is about 31992.5158435532. The cubic root of 1023521070 is about 1007.7796763518.

Adding to 1023521070 its reverse (701253201), we get a palindrome (1724774271).

The spelling of 1023521070 in words is "one billion, twenty-three million, five hundred twenty-one thousand, seventy".