2101431000 has 128 divisors (see below), whose sum is σ = 6595992000. Its totient is φ = 557004800.

The previous prime is 2101430993. The next prime is 2101431011. The reversal of 2101431000 is 1341012.

It is a happy number.

It is a super-2 number, since 2×2101431000² = 8832024495522000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 516976 + ... + 521024.

Almost surely, 2^2101431000 is an apocalyptic number.

2101431000 is a gapful number since it is divisible by the number (20) 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 2101431000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3297996000).

2101431000 is an abundant number, since it is smaller than the sum of its proper divisors (4494561000).

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

2101431000 is a wasteful number, since it uses less digits than its factorization.

2101431000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246 (or 4232 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2101431000 is about 45841.3677806411. The cubic root of 2101431000 is about 1280.8699733528.

Adding to 2101431000 its reverse (1341012), we get a palindrome (2102772012).

The spelling of 2101431000 in words is "two billion, one hundred one million, four hundred thirty-one thousand".