2098511731 has 4 divisors (see below), whose sum is σ = 2100509464. Its totient is φ = 2096514000.

The previous prime is 2098511719. The next prime is 2098511741. The reversal of 2098511731 is 1371158902.

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

It is a cyclic number.

It is not a de Polignac number, because 2098511731 - 2²⁹ = 1561640819 is a prime.

It is a super-2 number, since 2×2098511731² = 8807502970289232722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2098511741) 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, 997290 + ... + 999391.

It is an arithmetic number, because the mean of its divisors is an integer number (525127366).

Almost surely, 2^2098511731 is an apocalyptic number.

2098511731 is a deficient number, since it is larger than the sum of its proper divisors (1997733).

2098511731 is a wasteful number, since it uses less digits than its factorization.

2098511731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997732.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 2098511731 is about 45809.5157254473. The cubic root of 2098511731 is about 1280.2765782137.

The spelling of 2098511731 in words is "two billion, ninety-eight million, five hundred eleven thousand, seven hundred thirty-one".