2135401000 has 32 divisors (see below), whose sum is σ = 4996840680. Its totient is φ = 854160000.

The previous prime is 2135400997. The next prime is 2135401007. The reversal of 2135401000 is 1045312.

It can be written as a sum of positive squares in 4 ways, for example, as 1046004964 + 1089396036 = 32342^2 + 33006^2 .

It is not an unprimeable number, because it can be changed into a prime (2135401007) 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, 1066701 + ... + 1068700.

Almost surely, 2^2135401000 is an apocalyptic number.

2135401000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2135401000 is an abundant number, since it is smaller than the sum of its proper divisors (2861439680).

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

2135401000 is a wasteful number, since it uses less digits than its factorization.

2135401000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135422 (or 2135408 counting only the distinct ones).

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

The square root of 2135401000 is about 46210.3992625037. The cubic root of 2135401000 is about 1287.7349431431.

Adding to 2135401000 its reverse (1045312), we get a palindrome (2136446312).

The spelling of 2135401000 in words is "two billion, one hundred thirty-five million, four hundred one thousand".