2131032340 has 72 divisors (see below), whose sum is σ = 4741591680. Its totient is φ = 802992960.

The previous prime is 2131032307. The next prime is 2131032373. The reversal of 2131032340 is 432301312.

It is an interprime number because it is at equal distance from previous prime (2131032307) and next prime (2131032373).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2318401 + ... + 2319319.

It is an arithmetic number, because the mean of its divisors is an integer number (65855440).

Almost surely, 2^2131032340 is an apocalyptic number.

2131032340 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 2131032340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2370795840).

2131032340 is an abundant number, since it is smaller than the sum of its proper divisors (2610559340).

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

2131032340 is a wasteful number, since it uses less digits than its factorization.

2131032340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2131032340 is about 46163.1058313888. The cubic root of 2131032340 is about 1286.8561828402.

Adding to 2131032340 its reverse (432301312), we get a palindrome (2563333652).

The spelling of 2131032340 in words is "two billion, one hundred thirty-one million, thirty-two thousand, three hundred forty".