2031797499 has 4 divisors (see below), whose sum is σ = 2709063336. Its totient is φ = 1354531664.

The previous prime is 2031797473. The next prime is 2031797501. The reversal of 2031797499 is 9947971302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031797499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2031797899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338632914 + ... + 338632919.

It is an arithmetic number, because the mean of its divisors is an integer number (677265834).

Almost surely, 2^2031797499 is an apocalyptic number.

2031797499 is a deficient number, since it is larger than the sum of its proper divisors (677265837).

2031797499 is an equidigital number, since it uses as much as digits as its factorization.

2031797499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677265836.

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 2031797499 is about 45075.4644901192. The cubic root of 2031797499 is about 1266.5630299403.

The spelling of 2031797499 in words is "two billion, thirty-one million, seven hundred ninety-seven thousand, four hundred ninety-nine".