2131205750 has 16 divisors (see below), whose sum is σ = 3989617632. Its totient is φ = 852482200.

The previous prime is 2131205749. The next prime is 2131205759. The reversal of 2131205750 is 575021312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131205759) 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, 4262162 + ... + 4262661.

It is an arithmetic number, because the mean of its divisors is an integer number (249351102).

Almost surely, 2^2131205750 is an apocalyptic number.

2131205750 is a deficient number, since it is larger than the sum of its proper divisors (1858411882).

2131205750 is an equidigital number, since it uses as much as digits as its factorization.

2131205750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8524840 (or 8524830 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2131205750 is about 46164.9840246913. The cubic root of 2131205750 is about 1286.8910873125.

The spelling of 2131205750 in words is "two billion, one hundred thirty-one million, two hundred five thousand, seven hundred fifty".