4012531000 has 128 divisors (see below), whose sum is σ = 9758361600. Its totient is φ = 1543171200.

The previous prime is 4012530997. The next prime is 4012531013. The reversal of 4012531000 is 1352104.

It is a super-2 number, since 2×4012531000² = 32200810051922000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2772277 + ... + 2773723.

It is an arithmetic number, because the mean of its divisors is an integer number (76237200).

Almost surely, 2^4012531000 is an apocalyptic number.

4012531000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4012531000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4879180800).

4012531000 is an abundant number, since it is smaller than the sum of its proper divisors (5745830600).

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

4012531000 is a wasteful number, since it uses less digits than its factorization.

4012531000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 4012531000 is about 63344.5419906088. The cubic root of 4012531000 is about 1589.0569675288.

Adding to 4012531000 its reverse (1352104), we get a palindrome (4013883104).

The spelling of 4012531000 in words is "four billion, twelve million, five hundred thirty-one thousand".